1604872701 has 12 divisors (see below), whose sum is σ = 2361888828. Its totient is φ = 1049727744.

The previous prime is 1604872691. The next prime is 1604872723. The reversal of 1604872701 is 1072784061.

It can be written as a sum of positive squares in 2 ways, for example, as 1450467225 + 154405476 = 38085^2 + 12426^2 .

It is not a de Polignac number, because 1604872701 - 2¹⁰ = 1604871677 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604872741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1681780 + ... + 1682733.

It is an arithmetic number, because the mean of its divisors is an integer number (196824069).

Almost surely, 2^1604872701 is an apocalyptic number.

It is an amenable number.

1604872701 is a deficient number, since it is larger than the sum of its proper divisors (757016127).

1604872701 is a wasteful number, since it uses less digits than its factorization.

1604872701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364572 (or 3364569 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1604872701 is about 40060.8624595128. The cubic root of 1604872701 is about 1170.7932140281.

The spelling of 1604872701 in words is "one billion, six hundred four million, eight hundred seventy-two thousand, seven hundred one".