66465264 has 40 divisors (see below), whose sum is σ = 175894992. Its totient is φ = 21614080.

The previous prime is 66465253. The next prime is 66465281. The reversal of 66465264 is 46256466.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14919 + ... + 18854.

Almost surely, 2^66465264 is an apocalyptic number.

It is an amenable number.

66465264 is an abundant number, since it is smaller than the sum of its proper divisors (109429728).

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

66465264 is a wasteful number, since it uses less digits than its factorization.

66465264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33825 (or 33819 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 66465264 is about 8152.6231361446. The cubic root of 66465264 is about 405.0713972587.

The spelling of 66465264 in words is "sixty-six million, four hundred sixty-five thousand, two hundred sixty-four".