783664916 has 6 divisors (see below), whose sum is σ = 1371413610. Its totient is φ = 391832456.

The previous prime is 783664913. The next prime is 783664919. The reversal of 783664916 is 619466387.

It is an interprime number because it is at equal distance from previous prime (783664913) and next prime (783664919).

It can be written as a sum of positive squares in only one way, i.e., 514836100 + 268828816 = 22690^2 + 16396^2 .

It is a super-2 number, since 2×783664916² = 1228261401138574112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (783664913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97958111 + ... + 97958118.

It is an arithmetic number, because the mean of its divisors is an integer number (228568935).

Almost surely, 2^783664916 is an apocalyptic number.

It is an amenable number.

783664916 is a deficient number, since it is larger than the sum of its proper divisors (587748694).

783664916 is a wasteful number, since it uses less digits than its factorization.

783664916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195916233 (or 195916231 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The square root of 783664916 is about 27994.0157176494. The cubic root of 783664916 is about 921.9558720526.

The spelling of 783664916 in words is "seven hundred eighty-three million, six hundred sixty-four thousand, nine hundred sixteen".