1604470561 has 8 divisors (see below), whose sum is σ = 1690315200. Its totient is φ = 1518765840.

The previous prime is 1604470471. The next prime is 1604470619. The reversal of 1604470561 is 1650744061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1604470561 - 2⁷ = 1604470433 is a prime.

It is a super-2 number, since 2×1604470561² = 5148651562231309442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604470661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11005 + ... + 57706.

It is an arithmetic number, because the mean of its divisors is an integer number (211289400).

Almost surely, 2^1604470561 is an apocalyptic number.

It is an amenable number.

1604470561 is a deficient number, since it is larger than the sum of its proper divisors (85844639).

1604470561 is a wasteful number, since it uses less digits than its factorization.

1604470561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69959.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1604470561 is about 40055.8430319473. The cubic root of 1604470561 is about 1170.6954155935.

The spelling of 1604470561 in words is "one billion, six hundred four million, four hundred seventy thousand, five hundred sixty-one".