7457839678 has 16 divisors (see below), whose sum is σ = 11208637440. Its totient is φ = 3721636600.

The previous prime is 7457839673. The next prime is 7457839679. The reversal of 7457839678 is 8769387547.

It is a super-2 number, since 2×7457839678² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7457839673) 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, 3985083 + ... + 3986953.

It is an arithmetic number, because the mean of its divisors is an integer number (700539840).

Almost surely, 2^7457839678 is an apocalyptic number.

7457839678 is a deficient number, since it is larger than the sum of its proper divisors (3750797762).

7457839678 is a wasteful number, since it uses less digits than its factorization.

7457839678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703.

The product of its digits is 71124480, while the sum is 64.

The square root of 7457839678 is about 86358.7846023785. The cubic root of 7457839678 is about 1953.7591022930.

The spelling of 7457839678 in words is "seven billion, four hundred fifty-seven million, eight hundred thirty-nine thousand, six hundred seventy-eight".