65409992 has 16 divisors (see below), whose sum is σ = 122733900. Its totient is φ = 32680960.

The previous prime is 65409979. The next prime is 65410019. The reversal of 65409992 is 29990456.

65409992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 61058596 + 4351396 = 7814^2 + 2086^2 .

It is a super-3 number, since 3×65409992³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14684 + ... + 18612.

Almost surely, 2^65409992 is an apocalyptic number.

It is an amenable number.

65409992 is a deficient number, since it is larger than the sum of its proper divisors (57323908).

65409992 is a wasteful number, since it uses less digits than its factorization.

65409992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016 (or 6012 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 65409992 is about 8087.6444036567. The cubic root of 65409992 is about 402.9161715272.

The spelling of 65409992 in words is "sixty-five million, four hundred nine thousand, nine hundred ninety-two".