65445492 has 48 divisors (see below), whose sum is σ = 174917120. Its totient is φ = 18656352.

The previous prime is 65445491. The next prime is 65445493. The reversal of 65445492 is 29454456.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65445491) and next prime (65445493).

It is a super-2 number, since 2×65445492² = 8566224846244128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65445492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65445491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71703 + ... + 72609.

Almost surely, 2^65445492 is an apocalyptic number.

It is an amenable number.

65445492 is an abundant number, since it is smaller than the sum of its proper divisors (109471628).

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

65445492 is a wasteful number, since it uses less digits than its factorization.

65445492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 1778 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 65445492 is about 8089.8388117440. The cubic root of 65445492 is about 402.9890499809.

The spelling of 65445492 in words is "sixty-five million, four hundred forty-five thousand, four hundred ninety-two".