61939896 has 32 divisors (see below), whose sum is σ = 155898000. Its totient is φ = 20506880.

The previous prime is 61939877. The next prime is 61939931. The reversal of 61939896 is 69893916.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5085 + ... + 12236.

Almost surely, 2^61939896 is an apocalyptic number.

It is an amenable number.

61939896 is an abundant number, since it is smaller than the sum of its proper divisors (93958104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61939896 is a wasteful number, since it uses less digits than its factorization.

61939896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17479 (or 17475 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 61939896 is about 7870.1903407732. The cubic root of 61939896 is about 395.6612243934.

It can be divided in two parts, 61939 and 896, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 61939896 in words is "sixty-one million, nine hundred thirty-nine thousand, eight hundred ninety-six".