1604700081 has 24 divisors (see below), whose sum is σ = 2442810240. Its totient is φ = 1012284000.

The previous prime is 1604700067. The next prime is 1604700121. The reversal of 1604700081 is 1800074061.

It is a happy number.

It is not a de Polignac number, because 1604700081 - 2⁶ = 1604700017 is a prime.

It is a super-2 number, since 2×1604700081² = 5150124699922813122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1604700481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150631 + ... + 160931.

It is an arithmetic number, because the mean of its divisors is an integer number (101783760).

Almost surely, 2^1604700081 is an apocalyptic number.

It is an amenable number.

1604700081 is a deficient number, since it is larger than the sum of its proper divisors (838110159).

1604700081 is a wasteful number, since it uses less digits than its factorization.

1604700081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11237 (or 11234 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1604700081 is about 40058.7079297373. The cubic root of 1604700081 is about 1170.7512357099.

The spelling of 1604700081 in words is "one billion, six hundred four million, seven hundred thousand, eighty-one".