669157041 has 16 divisors (see below), whose sum is σ = 1052561408. Its totient is φ = 370040400.

The previous prime is 669157033. The next prime is 669157061. The reversal of 669157041 is 140751966.

669157041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 669157041 - 2³ = 669157033 is a prime.

It is a super-2 number, since 2×669157041² = 895542291039751362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669157061) 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, 513295 + ... + 514596.

It is an arithmetic number, because the mean of its divisors is an integer number (65785088).

Almost surely, 2^669157041 is an apocalyptic number.

It is an amenable number.

669157041 is a deficient number, since it is larger than the sum of its proper divisors (383404367).

669157041 is a wasteful number, since it uses less digits than its factorization.

669157041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027932.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 669157041 is about 25868.0699125389. The cubic root of 669157041 is about 874.6668842453. Note that the first 3 decimals are identical.

The spelling of 669157041 in words is "six hundred sixty-nine million, one hundred fifty-seven thousand, forty-one".