61996635 has 24 divisors (see below), whose sum is σ = 111168720. Its totient is φ = 31924032.

The previous prime is 61996609. The next prime is 61996657. The reversal of 61996635 is 53669916.

61996635 is a `hidden beast` number, since 6 + 1 + 9 + 9 + 6 + 635 = 666.

It is not a de Polignac number, because 61996635 - 2¹⁰ = 61995611 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

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, 22449 + ... + 25058.

It is an arithmetic number, because the mean of its divisors is an integer number (4632030).

Almost surely, 2^61996635 is an apocalyptic number.

61996635 is a deficient number, since it is larger than the sum of its proper divisors (49172085).

61996635 is a wasteful number, since it uses less digits than its factorization.

61996635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47547 (or 47544 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 61996635 is about 7873.7941933988. The cubic root of 61996635 is about 395.7820004593.

The spelling of 61996635 in words is "sixty-one million, nine hundred ninety-six thousand, six hundred thirty-five".