7165988 has 6 divisors (see below), whose sum is σ = 12540486. Its totient is φ = 3582992.

The previous prime is 7165981. The next prime is 7165997. The reversal of 7165988 is 8895617.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4831204 + 2334784 = 2198^2 + 1528^2 .

It is a super-2 number, since 2×7165988² = 102702768032288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7165981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895745 + ... + 895752.

It is an arithmetic number, because the mean of its divisors is an integer number (2090081).

Almost surely, 2^7165988 is an apocalyptic number.

It is an amenable number.

7165988 is a deficient number, since it is larger than the sum of its proper divisors (5374498).

7165988 is a wasteful number, since it uses less digits than its factorization.

7165988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791501 (or 1791499 counting only the distinct ones).

The product of its digits is 120960, while the sum is 44.

The square root of 7165988 is about 2676.9363085438. The cubic root of 7165988 is about 192.7933392441.

The spelling of 7165988 in words is "seven million, one hundred sixty-five thousand, nine hundred eighty-eight".