61977465 has 24 divisors (see below), whose sum is σ = 117194688. Its totient is φ = 30049440.

The previous prime is 61977439. The next prime is 61977473. The reversal of 61977465 is 56477916.

It is a happy number.

It is not a de Polignac number, because 61977465 - 2¹² = 61973369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61977465.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62109 + ... + 63098.

It is an arithmetic number, because the mean of its divisors is an integer number (4883112).

Almost surely, 2^61977465 is an apocalyptic number.

It is an amenable number.

61977465 is a deficient number, since it is larger than the sum of its proper divisors (55217223).

61977465 is a wasteful number, since it uses less digits than its factorization.

61977465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125229 (or 125226 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 61977465 is about 7872.5767700290. The cubic root of 61977465 is about 395.7412029596.

The spelling of 61977465 in words is "sixty-one million, nine hundred seventy-seven thousand, four hundred sixty-five".