7974742685 has 32 divisors (see below), whose sum is σ = 11799164160. Its totient is φ = 5038714368.

The previous prime is 7974742669. The next prime is 7974742697. The reversal of 7974742685 is 5862474797.

It is a cyclic number.

It is not a de Polignac number, because 7974742685 - 2⁴ = 7974742669 is a prime.

It is a super-2 number, since 2×7974742685² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243494 + ... + 274296.

It is an arithmetic number, because the mean of its divisors is an integer number (368723880).

Almost surely, 2^7974742685 is an apocalyptic number.

It is an amenable number.

7974742685 is a deficient number, since it is larger than the sum of its proper divisors (3824421475).

7974742685 is a wasteful number, since it uses less digits than its factorization.

7974742685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31397.

The product of its digits is 23708160, while the sum is 59.

The square root of 7974742685 is about 89301.4147984230. The cubic root of 7974742685 is about 1997.8930048151.

The spelling of 7974742685 in words is "seven billion, nine hundred seventy-four million, seven hundred forty-two thousand, six hundred eighty-five".