813515064 has 16 divisors (see below), whose sum is σ = 2033787720. Its totient is φ = 271171680.

The previous prime is 813515063. The next prime is 813515099. The reversal of 813515064 is 460515318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813515063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16948207 + ... + 16948254.

Almost surely, 2^813515064 is an apocalyptic number.

It is an amenable number.

813515064 is an abundant number, since it is smaller than the sum of its proper divisors (1220272656).

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

813515064 is a wasteful number, since it uses less digits than its factorization.

813515064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33896470 (or 33896466 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 813515064 is about 28522.1854702616. The cubic root of 813515064 is about 933.5162159767.

The spelling of 813515064 in words is "eight hundred thirteen million, five hundred fifteen thousand, sixty-four".