7621914772 has 12 divisors (see below), whose sum is σ = 13340184340. Its totient is φ = 3810433536.

The previous prime is 7621914761. The next prime is 7621914787. The reversal of 7621914772 is 2774191267.

It can be written as a sum of positive squares in 2 ways, for example, as 1932833296 + 5689081476 = 43964^2 + 75426^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97263 + ... + 157174.

Almost surely, 2^7621914772 is an apocalyptic number.

It is an amenable number.

7621914772 is a deficient number, since it is larger than the sum of its proper divisors (5718269568).

7621914772 is a wasteful number, since it uses less digits than its factorization.

7621914772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261930 (or 261928 counting only the distinct ones).

The product of its digits is 296352, while the sum is 46.

The square root of 7621914772 is about 87303.5782313646. The cubic root of 7621914772 is about 1967.9830914476.

The spelling of 7621914772 in words is "seven billion, six hundred twenty-one million, nine hundred fourteen thousand, seven hundred seventy-two".