61806996 has 48 divisors (see below), whose sum is σ = 163979200. Its totient is φ = 20121696.

The previous prime is 61806973. The next prime is 61807013. The reversal of 61806996 is 69960816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2011 + ... + 11298.

Almost surely, 2^61806996 is an apocalyptic number.

It is an amenable number.

61806996 is an abundant number, since it is smaller than the sum of its proper divisors (102172204).

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

61806996 is a wasteful number, since it uses less digits than its factorization.

61806996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13365 (or 13357 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 61806996 is about 7861.7425549302. The cubic root of 61806996 is about 395.3780411079.

The spelling of 61806996 in words is "sixty-one million, eight hundred six thousand, nine hundred ninety-six".