66610532 has 6 divisors (see below), whose sum is σ = 116568438. Its totient is φ = 33305264.

The previous prime is 66610519. The next prime is 66610543. The reversal of 66610532 is 23501666.

It can be written as a sum of positive squares in only one way, i.e., 58736896 + 7873636 = 7664^2 + 2806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66610495 and 66610504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8326313 + ... + 8326320.

It is an arithmetic number, because the mean of its divisors is an integer number (19428073).

Almost surely, 2^66610532 is an apocalyptic number.

It is an amenable number.

66610532 is a deficient number, since it is larger than the sum of its proper divisors (49957906).

66610532 is a wasteful number, since it uses less digits than its factorization.

66610532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16652637 (or 16652635 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 66610532 is about 8161.5275530994. The cubic root of 66610532 is about 405.3662936200.

The spelling of 66610532 in words is "sixty-six million, six hundred ten thousand, five hundred thirty-two".