83866970 has 32 divisors (see below), whose sum is σ = 171849600. Its totient is φ = 29170240.

The previous prime is 83866961. The next prime is 83866973. The reversal of 83866970 is 7966838.

It is not an unprimeable number, because it can be changed into a prime (83866973) 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, 14045 + ... + 19104.

It is an arithmetic number, because the mean of its divisors is an integer number (5370300).

Almost surely, 2^83866970 is an apocalyptic number.

83866970 is an abundant number, since it is smaller than the sum of its proper divisors (87982630).

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

83866970 is a wasteful number, since it uses less digits than its factorization.

83866970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33190.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 83866970 is about 9157.8911327882. The cubic root of 83866970 is about 437.7205984099.

The spelling of 83866970 in words is "eighty-three million, eight hundred sixty-six thousand, nine hundred seventy".