84724564 has 12 divisors (see below), whose sum is σ = 148644244. Its totient is φ = 42254784.

The previous prime is 84724543. The next prime is 84724567. The reversal of 84724564 is 46542748.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67568400 + 17156164 = 8220^2 + 4142^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84724567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25089 + ... + 28264.

Almost surely, 2^84724564 is an apocalyptic number.

It is an amenable number.

84724564 is a deficient number, since it is larger than the sum of its proper divisors (63919680).

84724564 is a wasteful number, since it uses less digits than its factorization.

84724564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53754 (or 53752 counting only the distinct ones).

The product of its digits is 215040, while the sum is 40.

The square root of 84724564 is about 9204.5947222026. The cubic root of 84724564 is about 439.2075336326.

The spelling of 84724564 in words is "eighty-four million, seven hundred twenty-four thousand, five hundred sixty-four".