66532530 has 32 divisors (see below), whose sum is σ = 162388800. Its totient is φ = 17440832.

The previous prime is 66532519. The next prime is 66532597. The reversal of 66532530 is 3523566.

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

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, 17025 + ... + 20564.

It is an arithmetic number, because the mean of its divisors is an integer number (5074650).

Almost surely, 2^66532530 is an apocalyptic number.

66532530 is an abundant number, since it is smaller than the sum of its proper divisors (95856270).

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

66532530 is a wasteful number, since it uses less digits than its factorization.

66532530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37658.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 66532530 is about 8156.7475135620. The cubic root of 66532530 is about 405.2080016753.

The spelling of 66532530 in words is "sixty-six million, five hundred thirty-two thousand, five hundred thirty".