66465315 has 72 divisors (see below), whose sum is σ = 137328048. Its totient is φ = 29635200.

The previous prime is 66465299. The next prime is 66465353. The reversal of 66465315 is 51356466.

66465315 is a `hidden beast` number, since 6 + 646 + 5 + 3 + 1 + 5 = 666.

It is not a de Polignac number, because 66465315 - 2⁴ = 66465299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66465315.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 94465 + ... + 95165.

It is an arithmetic number, because the mean of its divisors is an integer number (1907334).

Almost surely, 2^66465315 is an apocalyptic number.

66465315 is an abundant number, since it is smaller than the sum of its proper divisors (70862733).

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

66465315 is a wasteful number, since it uses less digits than its factorization.

66465315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 759 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 66465315 is about 8152.6262639716. The cubic root of 66465315 is about 405.0715008649.

The spelling of 66465315 in words is "sixty-six million, four hundred sixty-five thousand, three hundred fifteen".