7657134421 has 8 divisors (see below), whose sum is σ = 7685668224. Its totient is φ = 7628626320.

The previous prime is 7657134389. The next prime is 7657134427. The reversal of 7657134421 is 1244317567.

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

It is a cyclic number.

It is not a de Polignac number, because 7657134421 - 2⁵ = 7657134389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7657134427) 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, 752856 + ... + 762958.

It is an arithmetic number, because the mean of its divisors is an integer number (960708528).

Almost surely, 2^7657134421 is an apocalyptic number.

It is an amenable number.

7657134421 is a deficient number, since it is larger than the sum of its proper divisors (28533803).

7657134421 is a wasteful number, since it uses less digits than its factorization.

7657134421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12851.

The product of its digits is 141120, while the sum is 40.

The square root of 7657134421 is about 87505.0536883442. The cubic root of 7657134421 is about 1971.0096794563.

The spelling of 7657134421 in words is "seven billion, six hundred fifty-seven million, one hundred thirty-four thousand, four hundred twenty-one".