61964816 has 20 divisors (see below), whose sum is σ = 121850832. Its totient is φ = 30519456.

The previous prime is 61964803. The next prime is 61964821. The reversal of 61964816 is 61846916.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27830 + ... + 29973.

Almost surely, 2^61964816 is an apocalyptic number.

It is an amenable number.

61964816 is a deficient number, since it is larger than the sum of its proper divisors (59886016).

61964816 is a wasteful number, since it uses less digits than its factorization.

61964816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57878 (or 57872 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 61964816 is about 7871.7733707215. The cubic root of 61964816 is about 395.7142788131.

The spelling of 61964816 in words is "sixty-one million, nine hundred sixty-four thousand, eight hundred sixteen".