78367564 has 24 divisors (see below), whose sum is σ = 153263376. Its totient is φ = 34752000.

The previous prime is 78367547. The next prime is 78367567. The reversal of 78367564 is 46576387.

It is a super-2 number, since 2×78367564² = 12282950174588192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78367567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19917 + ... + 23524.

It is an arithmetic number, because the mean of its divisors is an integer number (6385974).

Almost surely, 2^78367564 is an apocalyptic number.

It is an amenable number.

78367564 is a deficient number, since it is larger than the sum of its proper divisors (74895812).

78367564 is a wasteful number, since it uses less digits than its factorization.

78367564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43497 (or 43495 counting only the distinct ones).

The product of its digits is 846720, while the sum is 46.

The square root of 78367564 is about 8852.5456225879. The cubic root of 78367564 is about 427.9359600810.

It can be divided in two parts, 7836 and 7564, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 78367564 in words is "seventy-eight million, three hundred sixty-seven thousand, five hundred sixty-four".