83724964 has 6 divisors (see below), whose sum is σ = 146518694. Its totient is φ = 41862480.

The previous prime is 83724961. The next prime is 83724967. The reversal of 83724964 is 46942738.

It is an interprime number because it is at equal distance from previous prime (83724961) and next prime (83724967).

It can be written as a sum of positive squares in only one way, i.e., 83174400 + 550564 = 9120^2 + 742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 83724964.

It is not an unprimeable number, because it can be changed into a prime (83724961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10465617 + ... + 10465624.

Almost surely, 2^83724964 is an apocalyptic number.

It is an amenable number.

83724964 is a deficient number, since it is larger than the sum of its proper divisors (62793730).

83724964 is a wasteful number, since it uses less digits than its factorization.

83724964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20931245 (or 20931243 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 83724964 is about 9150.1346438181. The cubic root of 83724964 is about 437.4734050772.

The spelling of 83724964 in words is "eighty-three million, seven hundred twenty-four thousand, nine hundred sixty-four".