2604627861 has 8 divisors (see below), whose sum is σ = 3788549664. Its totient is φ = 1578562320.

The previous prime is 2604627791. The next prime is 2604627899. The reversal of 2604627861 is 1687264062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2604627861 - 2¹⁸ = 2604365717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604627461) 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, 39464026 + ... + 39464091.

It is an arithmetic number, because the mean of its divisors is an integer number (473568708).

Almost surely, 2^2604627861 is an apocalyptic number.

It is an amenable number.

2604627861 is a deficient number, since it is larger than the sum of its proper divisors (1183921803).

2604627861 is a wasteful number, since it uses less digits than its factorization.

2604627861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78928131.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 2604627861 is about 51035.5548710896. The cubic root of 2604627861 is about 1375.8842331860.

The spelling of 2604627861 in words is "two billion, six hundred four million, six hundred twenty-seven thousand, eight hundred sixty-one".