65415672 has 48 divisors (see below), whose sum is σ = 202478640. Its totient is φ = 18690048.

The previous prime is 65415671. The next prime is 65415683. The reversal of 65415672 is 27651456.

It is a happy number.

It is a super-3 number, since 3×65415672³ (a number of 24 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65415671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64393 + ... + 65400.

It is an arithmetic number, because the mean of its divisors is an integer number (4218305).

Almost surely, 2^65415672 is an apocalyptic number.

It is an amenable number.

65415672 is an abundant number, since it is smaller than the sum of its proper divisors (137062968).

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

65415672 is a wasteful number, since it uses less digits than its factorization.

65415672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129812 (or 129805 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 65415672 is about 8087.9955489602. The cubic root of 65415672 is about 402.9278338515.

The spelling of 65415672 in words is "sixty-five million, four hundred fifteen thousand, six hundred seventy-two".