66836315 has 16 divisors (see below), whose sum is σ = 98712768. Its totient is φ = 42304896.

The previous prime is 66836311. The next prime is 66836317. The reversal of 66836315 is 51363866.

It is a cyclic number.

It is not a de Polignac number, because 66836315 - 2² = 66836311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66836311) 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, 72992 + ... + 73901.

It is an arithmetic number, because the mean of its divisors is an integer number (6169548).

Almost surely, 2^66836315 is an apocalyptic number.

66836315 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66836315 is a deficient number, since it is larger than the sum of its proper divisors (31876453).

66836315 is a wasteful number, since it uses less digits than its factorization.

66836315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146918.

The product of its digits is 77760, while the sum is 38.

The square root of 66836315 is about 8175.3480048252. The cubic root of 66836315 is about 405.8237868452.

The spelling of 66836315 in words is "sixty-six million, eight hundred thirty-six thousand, three hundred fifteen".