66415032 has 64 divisors (see below), whose sum is σ = 194208000. Its totient is φ = 20971872.

The previous prime is 66415001. The next prime is 66415043. The reversal of 66415032 is 23051466.

It is a super-2 number, since 2×66415032² = 8821912951122048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 66414987 and 66415005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3988 + ... + 12195.

It is an arithmetic number, because the mean of its divisors is an integer number (3034500).

Almost surely, 2^66415032 is an apocalyptic number.

It is an amenable number.

66415032 is an abundant number, since it is smaller than the sum of its proper divisors (127792968).

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

66415032 is a wasteful number, since it uses less digits than its factorization.

66415032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16217 (or 16207 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66415032 is about 8149.5418276122. The cubic root of 66415032 is about 404.9693255232.

Adding to 66415032 its reverse (23051466), we get a palindrome (89466498).

The spelling of 66415032 in words is "sixty-six million, four hundred fifteen thousand, thirty-two".