7897222615 has 16 divisors (see below), whose sum is σ = 9918088128. Its totient is φ = 6025130496.

The previous prime is 7897222603. The next prime is 7897222631. The reversal of 7897222615 is 5162227987.

It is a cyclic number.

It is not a de Polignac number, because 7897222615 - 2⁵ = 7897222583 is a prime.

It is a super-2 number, since 2×7897222615² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63132 + ... + 140641.

It is an arithmetic number, because the mean of its divisors is an integer number (619880508).

Almost surely, 2^7897222615 is an apocalyptic number.

7897222615 is a deficient number, since it is larger than the sum of its proper divisors (2020865513).

7897222615 is a wasteful number, since it uses less digits than its factorization.

7897222615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204138.

The product of its digits is 846720, while the sum is 49.

The square root of 7897222615 is about 88866.3187883914. The cubic root of 7897222615 is about 1991.3982761264.

The spelling of 7897222615 in words is "seven billion, eight hundred ninety-seven million, two hundred twenty-two thousand, six hundred fifteen".