61197956 has 6 divisors (see below), whose sum is σ = 107096430. Its totient is φ = 30598976.

The previous prime is 61197949. The next prime is 61197959. The reversal of 61197956 is 65979116.

It is a happy number.

61197956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 43692100 + 17505856 = 6610^2 + 4184^2 .

It is not an unprimeable number, because it can be changed into a prime (61197959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7649741 + ... + 7649748.

It is an arithmetic number, because the mean of its divisors is an integer number (17849405).

Almost surely, 2^61197956 is an apocalyptic number.

It is an amenable number.

61197956 is a deficient number, since it is larger than the sum of its proper divisors (45898474).

61197956 is a wasteful number, since it uses less digits than its factorization.

61197956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15299493 (or 15299491 counting only the distinct ones).

The product of its digits is 102060, while the sum is 44.

The square root of 61197956 is about 7822.9122454493. The cubic root of 61197956 is about 394.0750799571.

It can be divided in two parts, 6 and 1197956, that multiplied together give a triangular number (7187736 = T₃₇₉₁).

The spelling of 61197956 in words is "sixty-one million, one hundred ninety-seven thousand, nine hundred fifty-six".