731681064 has 48 divisors (see below), whose sum is σ = 1989580320. Its totient is φ = 242916000.

The previous prime is 731681047. The next prime is 731681141. The reversal of 731681064 is 460186137.

It is a hoax number, since the sum of its digits (36) 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 (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2172 + ... + 38315.

It is an arithmetic number, because the mean of its divisors is an integer number (41449590).

Almost surely, 2^731681064 is an apocalyptic number.

It is an amenable number.

731681064 is an abundant number, since it is smaller than the sum of its proper divisors (1257899256).

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

731681064 is a wasteful number, since it uses less digits than its factorization.

731681064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40750 (or 40743 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 731681064 is about 27049.6037678928. The cubic root of 731681064 is about 901.1019687067.

The spelling of 731681064 in words is "seven hundred thirty-one million, six hundred eighty-one thousand, sixty-four".