2604639794 has 8 divisors (see below), whose sum is σ = 3923171868. Its totient is φ = 1296915840.

The previous prime is 2604639787. The next prime is 2604639797. The reversal of 2604639794 is 4979364062.

It can be written as a sum of positive squares in 2 ways, for example, as 2569983025 + 34656769 = 50695^2 + 5887^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2604639797) 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, 2701427 + ... + 2702390.

Almost surely, 2^2604639794 is an apocalyptic number.

2604639794 is a deficient number, since it is larger than the sum of its proper divisors (1318532074).

2604639794 is a wasteful number, since it uses less digits than its factorization.

2604639794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5404060.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The square root of 2604639794 is about 51035.6717796484. The cubic root of 2604639794 is about 1375.8863343693.

The spelling of 2604639794 in words is "two billion, six hundred four million, six hundred thirty-nine thousand, seven hundred ninety-four".