1264612601 has 4 divisors (see below), whose sum is σ = 1445271552. Its totient is φ = 1083953652.

The previous prime is 1264612589. The next prime is 1264612607. The reversal of 1264612601 is 1062164621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1264612601 - 2⁶ = 1264612537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264612607) 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, 90329465 + ... + 90329478.

It is an arithmetic number, because the mean of its divisors is an integer number (361317888).

Almost surely, 2^1264612601 is an apocalyptic number.

It is an amenable number.

1264612601 is a deficient number, since it is larger than the sum of its proper divisors (180658951).

1264612601 is an equidigital number, since it uses as much as digits as its factorization.

1264612601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180658950.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1264612601 is about 35561.3920003140. The cubic root of 1264612601 is about 1081.3986796514.

The spelling of 1264612601 in words is "one billion, two hundred sixty-four million, six hundred twelve thousand, six hundred one".