84637937476 has 9 divisors (see below), whose sum is σ = 148117408831. Its totient is φ = 42318677812.

The previous prime is 84637937393. The next prime is 84637937479. The reversal of 84637937476 is 67473973648.

The square root of 84637937476 is 290926.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84637937479) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 509121 + ... + 654583.

Almost surely, 2^84637937476 is an apocalyptic number.

84637937476 is the 290926-th square number.

It is an amenable number.

84637937476 is a deficient number, since it is larger than the sum of its proper divisors (63479471355).

84637937476 is an frugal number, since it uses more digits than its factorization.

84637937476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290930 (or 145465 counting only the distinct ones).

The product of its digits is 128024064, while the sum is 64.

Multiplying 84637937476 by its sum of digits (64), we get a square (5416827998464 = 2327408²).

The spelling of 84637937476 in words is "eighty-four billion, six hundred thirty-seven million, nine hundred thirty-seven thousand, four hundred seventy-six".