66254364 has 36 divisors (see below), whose sum is σ = 182702520. Its totient is φ = 20076960.

The previous prime is 66254341. The next prime is 66254407. The reversal of 66254364 is 46345266.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 83259 + ... + 84050.

It is an arithmetic number, because the mean of its divisors is an integer number (5075070).

Almost surely, 2^66254364 is an apocalyptic number.

It is an amenable number.

66254364 is an abundant number, since it is smaller than the sum of its proper divisors (116448156).

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

66254364 is a wasteful number, since it uses less digits than its factorization.

66254364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167330 (or 167325 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 66254364 is about 8139.6783720243. The cubic root of 66254364 is about 404.6425011677.

The spelling of 66254364 in words is "sixty-six million, two hundred fifty-four thousand, three hundred sixty-four".