66102052 has 24 divisors (see below), whose sum is σ = 122827320. Its totient is φ = 31019520.

The previous prime is 66102041. The next prime is 66102053. The reversal of 66102052 is 25020166.

It can be written as a sum of positive squares in 4 ways, for example, as 8433216 + 57668836 = 2904^2 + 7594^2 .

It is a super-2 number, since 2×66102052² = 8738962557221408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66102053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27474 + ... + 29782.

It is an arithmetic number, because the mean of its divisors is an integer number (5117805).

Almost surely, 2^66102052 is an apocalyptic number.

It is an amenable number.

66102052 is a deficient number, since it is larger than the sum of its proper divisors (56725268).

66102052 is a wasteful number, since it uses less digits than its factorization.

66102052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 66102052 is about 8130.3168449944. The cubic root of 66102052 is about 404.3321860237.

The spelling of 66102052 in words is "sixty-six million, one hundred two thousand, fifty-two".