7621622772 has 12 divisors (see below), whose sum is σ = 17783786496. Its totient is φ = 2540540920.

The previous prime is 7621622747. The next prime is 7621622777. The reversal of 7621622772 is 2772261267.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7621622777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317567604 + ... + 317567627.

It is an arithmetic number, because the mean of its divisors is an integer number (1481982208).

Almost surely, 2^7621622772 is an apocalyptic number.

It is an amenable number.

7621622772 is an abundant number, since it is smaller than the sum of its proper divisors (10162163724).

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

7621622772 is a wasteful number, since it uses less digits than its factorization.

7621622772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635135238 (or 635135236 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The square root of 7621622772 is about 87301.9058898487. The cubic root of 7621622772 is about 1967.9579596000.

The spelling of 7621622772 in words is "seven billion, six hundred twenty-one million, six hundred twenty-two thousand, seven hundred seventy-two".