66113415 has 20 divisors (see below), whose sum is σ = 118515144. Its totient is φ = 35260272.

The previous prime is 66113363. The next prime is 66113449. The reversal of 66113415 is 51431166.

66113415 is a `hidden beast` number, since 6 + 611 + 3 + 41 + 5 = 666.

It is not a de Polignac number, because 66113415 - 2⁶ = 66113351 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 81217 + ... + 82026.

Almost surely, 2^66113415 is an apocalyptic number.

66113415 is a deficient number, since it is larger than the sum of its proper divisors (52401729).

66113415 is a wasteful number, since it uses less digits than its factorization.

66113415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163260 (or 163251 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 66113415 is about 8131.0156192200. The cubic root of 66113415 is about 404.3553530472.

The spelling of 66113415 in words is "sixty-six million, one hundred thirteen thousand, four hundred fifteen".