623498889 has 32 divisors (see below), whose sum is σ = 954419200. Its totient is φ = 358862400.

The previous prime is 623498879. The next prime is 623498891. The reversal of 623498889 is 988894326.

623498889 = T₃₂₀₆ + T₃₂₀₇ + ... + T₃₃₂₂.

It is not a de Polignac number, because 623498889 - 2⁹ = 623498377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623498819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53214 + ... + 63864.

It is an arithmetic number, because the mean of its divisors is an integer number (29825600).

Almost surely, 2^623498889 is an apocalyptic number.

It is an amenable number.

623498889 is a deficient number, since it is larger than the sum of its proper divisors (330920311).

623498889 is a wasteful number, since it uses less digits than its factorization.

623498889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10765.

The product of its digits is 5971968, while the sum is 57.

The square root of 623498889 is about 24969.9597316455. The cubic root of 623498889 is about 854.3029276152.

The spelling of 623498889 in words is "six hundred twenty-three million, four hundred ninety-eight thousand, eight hundred eighty-nine".