66432270 has 64 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 17293056.

The previous prime is 66432251. The next prime is 66432307. The reversal of 66432270 is 7223466.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371041 + ... + 371219.

It is an arithmetic number, because the mean of its divisors is an integer number (2551500).

Almost surely, 2^66432270 is an apocalyptic number.

66432270 is an abundant number, since it is smaller than the sum of its proper divisors (96863730).

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

66432270 is a wasteful number, since it uses less digits than its factorization.

66432270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 66432270 is about 8150.5993644639. The cubic root of 66432270 is about 405.0043590447.

The spelling of 66432270 in words is "sixty-six million, four hundred thirty-two thousand, two hundred seventy".