84764560 has 20 divisors (see below), whose sum is σ = 197077788. Its totient is φ = 33905792.

The previous prime is 84764527. The next prime is 84764573. The reversal of 84764560 is 6546748.

It can be written as a sum of positive squares in 2 ways, for example, as 38142976 + 46621584 = 6176^2 + 6828^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529699 + ... + 529858.

Almost surely, 2^84764560 is an apocalyptic number.

84764560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84764560 is an abundant number, since it is smaller than the sum of its proper divisors (112313228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84764560 is a wasteful number, since it uses less digits than its factorization.

84764560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059570 (or 1059564 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 84764560 is about 9206.7670764498. The cubic root of 84764560 is about 439.2766351233.

The spelling of 84764560 in words is "eighty-four million, seven hundred sixty-four thousand, five hundred sixty".