7612664321 has 4 divisors (see below), whose sum is σ = 7622910912. Its totient is φ = 7602417732.

The previous prime is 7612664309. The next prime is 7612664359. The reversal of 7612664321 is 1234662167.

It is a happy number.

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 7612664321 - 2³⁰ = 6538922497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7612664221) 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, 5122181 + ... + 5123666.

It is an arithmetic number, because the mean of its divisors is an integer number (1905727728).

Almost surely, 2^7612664321 is an apocalyptic number.

It is an amenable number.

7612664321 is a deficient number, since it is larger than the sum of its proper divisors (10246591).

7612664321 is a wasteful number, since it uses less digits than its factorization.

7612664321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246590.

The product of its digits is 72576, while the sum is 38.

The square root of 7612664321 is about 87250.5834994815. The cubic root of 7612664321 is about 1967.1866117577.

The spelling of 7612664321 in words is "seven billion, six hundred twelve million, six hundred sixty-four thousand, three hundred twenty-one".