1656885623 has 8 divisors (see below), whose sum is σ = 1714813680. Its totient is φ = 1599010560.

The previous prime is 1656885611. The next prime is 1656885649. The reversal of 1656885623 is 3265886561.

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 1656885623 - 2²⁰ = 1655837047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656885683) 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, 56711 + ... + 80807.

It is an arithmetic number, because the mean of its divisors is an integer number (214351710).

Almost surely, 2^1656885623 is an apocalyptic number.

1656885623 is a deficient number, since it is larger than the sum of its proper divisors (57928057).

1656885623 is a wasteful number, since it uses less digits than its factorization.

1656885623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26497.

The product of its digits is 2073600, while the sum is 50.

The square root of 1656885623 is about 40704.8599432549. The cubic root of 1656885623 is about 1183.3072076138.

The spelling of 1656885623 in words is "one billion, six hundred fifty-six million, eight hundred eighty-five thousand, six hundred twenty-three".