2645554623 has 32 divisors (see below), whose sum is σ = 3762259200. Its totient is φ = 1648843776.

The previous prime is 2645554589. The next prime is 2645554633. The reversal of 2645554623 is 3264555462.

It is not a de Polignac number, because 2645554623 - 2⁶ = 2645554559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645554633) 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, 3422065 + ... + 3422837.

It is an arithmetic number, because the mean of its divisors is an integer number (117570600).

Almost surely, 2^2645554623 is an apocalyptic number.

2645554623 is a deficient number, since it is larger than the sum of its proper divisors (1116704577).

2645554623 is a wasteful number, since it uses less digits than its factorization.

2645554623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511.

The product of its digits is 864000, while the sum is 42.

The square root of 2645554623 is about 51434.9552639059. The cubic root of 2645554623 is about 1383.0532800021.

The spelling of 2645554623 in words is "two billion, six hundred forty-five million, five hundred fifty-four thousand, six hundred twenty-three".