872511983 has 6 divisors (see below), whose sum is σ = 1014962976. Its totient is φ = 747867372.

The previous prime is 872511949. The next prime is 872512013. The reversal of 872511983 is 389115278.

It is not a de Polignac number, because 872511983 - 2⁸ = 872511727 is a prime.

It is a super-2 number, since 2×872511983² = 1522554320957184578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872511943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8903135 + ... + 8903232.

It is an arithmetic number, because the mean of its divisors is an integer number (169160496).

Almost surely, 2^872511983 is an apocalyptic number.

872511983 is a deficient number, since it is larger than the sum of its proper divisors (142450993).

872511983 is a wasteful number, since it uses less digits than its factorization.

872511983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17806381 (or 17806374 counting only the distinct ones).

The product of its digits is 120960, while the sum is 44.

The square root of 872511983 is about 29538.3138144343. The cubic root of 872511983 is about 955.5581773895.

The spelling of 872511983 in words is "eight hundred seventy-two million, five hundred eleven thousand, nine hundred eighty-three".