84761000731 has 4 divisors (see below), whose sum is σ = 92466546264. Its totient is φ = 77055455200.

The previous prime is 84761000717. The next prime is 84761000747. The reversal of 84761000731 is 13700016748.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84761000731 - 2²³ = 84752612123 is a prime.

It is a super-2 number, since 2×84761000731² (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 (84761000131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3852772750 + ... + 3852772771.

It is an arithmetic number, because the mean of its divisors is an integer number (23116636566).

Almost surely, 2^84761000731 is an apocalyptic number.

84761000731 is the 155620-th centered heptagonal number.

84761000731 is a deficient number, since it is larger than the sum of its proper divisors (7705545533).

84761000731 is a wasteful number, since it uses less digits than its factorization.

84761000731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7705545532.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 84761000731 in words is "eighty-four billion, seven hundred sixty-one million, seven hundred thirty-one", and thus it is an aban number.