7643667974 has 16 divisors (see below), whose sum is σ = 11607687168. Its totient is φ = 3774709512.

The previous prime is 7643667973. The next prime is 7643667979. The reversal of 7643667974 is 4797663467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7643667971) 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, 10832 + ... + 124115.

It is an arithmetic number, because the mean of its divisors is an integer number (725480448).

Almost surely, 2^7643667974 is an apocalyptic number.

7643667974 is a deficient number, since it is larger than the sum of its proper divisors (3964019194).

7643667974 is a wasteful number, since it uses less digits than its factorization.

7643667974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135299.

The product of its digits is 32006016, while the sum is 59.

The square root of 7643667974 is about 87428.0731458723. The cubic root of 7643667974 is about 1969.8535431847.

The spelling of 7643667974 in words is "seven billion, six hundred forty-three million, six hundred sixty-seven thousand, nine hundred seventy-four".