87694784731 has 8 divisors (see below), whose sum is σ = 88680217184. Its totient is φ = 86711929920.

The previous prime is 87694784711. The next prime is 87694784747. The reversal of 87694784731 is 13748749678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87694784731 - 2⁷ = 87694784603 is a prime.

It is a super-2 number, since 2×87694784731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87694784711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575946 + ... + 712111.

It is an arithmetic number, because the mean of its divisors is an integer number (11085027148).

Almost surely, 2^87694784731 is an apocalyptic number.

87694784731 is a deficient number, since it is larger than the sum of its proper divisors (985432453).

87694784731 is a wasteful number, since it uses less digits than its factorization.

87694784731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288821.

The product of its digits is 56899584, while the sum is 64.

The spelling of 87694784731 in words is "eighty-seven billion, six hundred ninety-four million, seven hundred eighty-four thousand, seven hundred thirty-one".