2604660442 has 4 divisors (see below), whose sum is σ = 3906990666. Its totient is φ = 1302330220.

The previous prime is 2604660439. The next prime is 2604660449. The reversal of 2604660442 is 2440664062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2440664062 = 2 ⋅1220332031.

It can be written as a sum of positive squares in only one way, i.e., 2587858641 + 16801801 = 50871^2 + 4099^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2604660398 and 2604660407.

It is not an unprimeable number, because it can be changed into a prime (2604660449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651165109 + ... + 651165112.

Almost surely, 2^2604660442 is an apocalyptic number.

2604660442 is a deficient number, since it is larger than the sum of its proper divisors (1302330224).

2604660442 is a wasteful number, since it uses less digits than its factorization.

2604660442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302330223.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 2604660442 is about 51035.8740691291. The cubic root of 2604660442 is about 1375.8899700896.

The spelling of 2604660442 in words is "two billion, six hundred four million, six hundred sixty thousand, four hundred forty-two".