66401514 has 24 divisors (see below), whose sum is σ = 144108900. Its totient is φ = 22097088.

The previous prime is 66401501. The next prime is 66401521. The reversal of 66401514 is 41510466.

66401514 is a `hidden beast` number, since 6 + 640 + 1 + 5 + 14 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65367225 + 1034289 = 8085^2 + 1017^2 .

It is a super-2 number, since 2×66401514² = 8818322122984392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9462 + ... + 14910.

Almost surely, 2^66401514 is an apocalyptic number.

66401514 is an abundant number, since it is smaller than the sum of its proper divisors (77707386).

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

66401514 is a wasteful number, since it uses less digits than its factorization.

66401514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134 (or 6131 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 66401514 is about 8148.7124136271. The cubic root of 66401514 is about 404.9418480750.

The spelling of 66401514 in words is "sixty-six million, four hundred one thousand, five hundred fourteen".