65613492 has 72 divisors (see below), whose sum is σ = 191894976. Its totient is φ = 18514944.

The previous prime is 65613467. The next prime is 65613511. The reversal of 65613492 is 29431656.

It is a happy number.

65613492 is a `hidden beast` number, since 6 + 561 + 3 + 4 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19348 + ... + 22484.

It is an arithmetic number, because the mean of its divisors is an integer number (2665208).

Almost surely, 2^65613492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65613492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95947488).

65613492 is an abundant number, since it is smaller than the sum of its proper divisors (126281484).

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

65613492 is a wasteful number, since it uses less digits than its factorization.

65613492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237 (or 3232 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 65613492 is about 8100.2155526875. The cubic root of 65613492 is about 403.3335825572. Note that the first 3 decimals are identical.

The spelling of 65613492 in words is "sixty-five million, six hundred thirteen thousand, four hundred ninety-two".