7492779678 has 16 divisors (see below), whose sum is σ = 14991115536. Its totient is φ = 2496667200.

The previous prime is 7492779661. The next prime is 7492779689. The reversal of 7492779678 is 8769772947.

It is a happy number.

It is a super-2 number, since 2×7492779678² (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 7 ways as a sum of consecutive naturals, for example, 213873 + ... + 246428.

It is an arithmetic number, because the mean of its divisors is an integer number (936944721).

Almost surely, 2^7492779678 is an apocalyptic number.

7492779678 is an abundant number, since it is smaller than the sum of its proper divisors (7498335858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7492779678 is a wasteful number, since it uses less digits than its factorization.

7492779678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463019.

The product of its digits is 74680704, while the sum is 66.

The square root of 7492779678 is about 86560.8437920981. The cubic root of 7492779678 is about 1956.8054721254.

The spelling of 7492779678 in words is "seven billion, four hundred ninety-two million, seven hundred seventy-nine thousand, six hundred seventy-eight".