84770970 has 32 divisors (see below), whose sum is σ = 214159680. Its totient is φ = 21415680.

The previous prime is 84770969. The next prime is 84770977. The reversal of 84770970 is 7907748.

It is a super-2 number, since 2×84770970² = 14372234709481800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84770977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73791 + ... + 74930.

It is an arithmetic number, because the mean of its divisors is an integer number (6692490).

Almost surely, 2^84770970 is an apocalyptic number.

84770970 is an abundant number, since it is smaller than the sum of its proper divisors (129388710).

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

84770970 is a wasteful number, since it uses less digits than its factorization.

84770970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148750.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 84770970 is about 9207.1151833786. The cubic root of 84770970 is about 439.2877077235.

It can be divided in two parts, 847 and 70970, that added together give a palindrome (71817).

The spelling of 84770970 in words is "eighty-four million, seven hundred seventy thousand, nine hundred seventy".