66252357 has 16 divisors (see below), whose sum is σ = 98280000. Its totient is φ = 44110512.

The previous prime is 66252337. The next prime is 66252359. The reversal of 66252357 is 75325266.

It is a happy number.

66252357 is a `hidden beast` number, since 6 + 625 + 23 + 5 + 7 = 666.

It is not a de Polignac number, because 66252357 - 2¹⁴ = 66235973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66252359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33019 + ... + 34967.

It is an arithmetic number, because the mean of its divisors is an integer number (6142500).

Almost surely, 2^66252357 is an apocalyptic number.

It is an amenable number.

66252357 is a deficient number, since it is larger than the sum of its proper divisors (32027643).

66252357 is a wasteful number, since it uses less digits than its factorization.

66252357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217 (or 3211 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 66252357 is about 8139.5550861211. Note that the first 3 decimals coincide. The cubic root of 66252357 is about 404.6384152698.

The spelling of 66252357 in words is "sixty-six million, two hundred fifty-two thousand, three hundred fifty-seven".