61209264 has 20 divisors (see below), whose sum is σ = 158124056. Its totient is φ = 20403072.

The previous prime is 61209199. The next prime is 61209289. The reversal of 61209264 is 46290216.

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, 637549 + ... + 637644.

Almost surely, 2^61209264 is an apocalyptic number.

It is an amenable number.

61209264 is an abundant number, since it is smaller than the sum of its proper divisors (96914792).

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

61209264 is a wasteful number, since it uses less digits than its factorization.

61209264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275204 (or 1275198 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 61209264 is about 7823.6349608095. The cubic root of 61209264 is about 394.0993505202.

The spelling of 61209264 in words is "sixty-one million, two hundred nine thousand, two hundred sixty-four".