66057351 has 16 divisors (see below), whose sum is σ = 89779200. Its totient is φ = 43194528.

The previous prime is 66057337. The next prime is 66057367. The reversal of 66057351 is 15375066.

It is not a de Polignac number, because 66057351 - 2⁶ = 66057287 is a prime.

It is a super-2 number, since 2×66057351² = 8727147242274402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66057391) 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, 38745 + ... + 40413.

It is an arithmetic number, because the mean of its divisors is an integer number (5611200).

Almost surely, 2^66057351 is an apocalyptic number.

66057351 is a deficient number, since it is larger than the sum of its proper divisors (23721849).

66057351 is a wasteful number, since it uses less digits than its factorization.

66057351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 66057351 is about 8127.5673482291. The cubic root of 66057351 is about 404.2410233029.

The spelling of 66057351 in words is "sixty-six million, fifty-seven thousand, three hundred fifty-one".