66529152 has 48 divisors (see below), whose sum is σ = 191447880. Its totient is φ = 22176000.

The previous prime is 66529129. The next prime is 66529171. The reversal of 66529152 is 25192566.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×66529152² = 8852256131678208, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 27724 + ... + 30027.

Almost surely, 2^66529152 is an apocalyptic number.

It is an amenable number.

66529152 is an abundant number, since it is smaller than the sum of its proper divisors (124918728).

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

66529152 is a wasteful number, since it uses less digits than its factorization.

66529152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57771 (or 57756 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 66529152 is about 8156.5404431045. The cubic root of 66529152 is about 405.2011437980.

The spelling of 66529152 in words is "sixty-six million, five hundred twenty-nine thousand, one hundred fifty-two".