84520737 has 18 divisors (see below), whose sum is σ = 142018578. Its totient is φ = 48297312.

The previous prime is 84520729. The next prime is 84520741. The reversal of 84520737 is 73702548.

It can be written as a sum of positive squares in only one way, i.e., 79281216 + 5239521 = 8904^2 + 2289^2 .

It is not a de Polignac number, because 84520737 - 2³ = 84520729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84520727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 95388 + ... + 96269.

It is an arithmetic number, because the mean of its divisors is an integer number (7889921).

Almost surely, 2^84520737 is an apocalyptic number.

It is an amenable number.

84520737 is a deficient number, since it is larger than the sum of its proper divisors (57497841).

84520737 is a wasteful number, since it uses less digits than its factorization.

84520737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191677 (or 191667 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 84520737 is about 9193.5160303336. The cubic root of 84520737 is about 438.8550414484.

The spelling of 84520737 in words is "eighty-four million, five hundred twenty thousand, seven hundred thirty-seven".