84628690 has 16 divisors (see below), whose sum is σ = 153731160. Its totient is φ = 33540480.

The previous prime is 84628637. The next prime is 84628697. The reversal of 84628690 is 9682648.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55219761 + 29408929 = 7431^2 + 5423^2 .

It is a super-2 number, since 2×84628690² = 14324030342232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84628697) 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, 37731 + ... + 39910.

Almost surely, 2^84628690 is an apocalyptic number.

84628690 is a deficient number, since it is larger than the sum of its proper divisors (69102470).

84628690 is a wasteful number, since it uses less digits than its factorization.

84628690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77757.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 84628690 is about 9199.3853055517. The cubic root of 84628690 is about 439.0418025687.

The spelling of 84628690 in words is "eighty-four million, six hundred twenty-eight thousand, six hundred ninety".