61401463 has 8 divisors (see below), whose sum is σ = 64529168. Its totient is φ = 58351104.

The previous prime is 61401449. The next prime is 61401481. The reversal of 61401463 is 36410416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61401463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61402463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17706 + ... + 20887.

It is an arithmetic number, because the mean of its divisors is an integer number (8066146).

Almost surely, 2^61401463 is an apocalyptic number.

61401463 is a deficient number, since it is larger than the sum of its proper divisors (3127705).

61401463 is a wasteful number, since it uses less digits than its factorization.

61401463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38673.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 61401463 is about 7835.9085625089. The cubic root of 61401463 is about 394.5114142780.

Adding to 61401463 its reverse (36410416), we get a palindrome (97811879).

The spelling of 61401463 in words is "sixty-one million, four hundred one thousand, four hundred sixty-three".