84690756 has 18 divisors (see below), whose sum is σ = 214079502. Its totient is φ = 28230240.

The previous prime is 84690751. The next prime is 84690803. The reversal of 84690756 is 65709648.

It can be written as a sum of positive squares in only one way, i.e., 83722500 + 968256 = 9150^2 + 984^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (84690751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1176225 + ... + 1176296.

Almost surely, 2^84690756 is an apocalyptic number.

It is an amenable number.

84690756 is an abundant number, since it is smaller than the sum of its proper divisors (129388746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84690756 is a wasteful number, since it uses less digits than its factorization.

84690756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352531 (or 2352526 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 84690756 is about 9202.7580648412. The cubic root of 84690756 is about 439.1491062490.

The spelling of 84690756 in words is "eighty-four million, six hundred ninety thousand, seven hundred fifty-six".