2558690623 has 4 divisors (see below), whose sum is σ = 2559670960. Its totient is φ = 2557710288.

The previous prime is 2558690581. The next prime is 2558690633. The reversal of 2558690623 is 3260968552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2558690623 - 2²⁹ = 2021819711 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 (2558690633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486243 + ... + 491476.

It is an arithmetic number, because the mean of its divisors is an integer number (639917740).

Almost surely, 2^2558690623 is an apocalyptic number.

2558690623 is a deficient number, since it is larger than the sum of its proper divisors (980337).

2558690623 is an equidigital number, since it uses as much as digits as its factorization.

2558690623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980336.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 2558690623 is about 50583.5014901104. The cubic root of 2558690623 is about 1367.7474880689.

The spelling of 2558690623 in words is "two billion, five hundred fifty-eight million, six hundred ninety thousand, six hundred twenty-three".