7166631 has 4 divisors (see below), whose sum is σ = 9555512. Its totient is φ = 4777752.

The previous prime is 7166609. The next prime is 7166633. The reversal of 7166631 is 1366617.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7166631 - 2¹¹ = 7164583 is a prime.

It is a super-2 number, since 2×7166631² = 102721199780322, which contains 22 as substring.

It is a Duffinian number.

7166631 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7166633) 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, 1194436 + ... + 1194441.

It is an arithmetic number, because the mean of its divisors is an integer number (2388878).

Almost surely, 2^7166631 is an apocalyptic number.

7166631 is a deficient number, since it is larger than the sum of its proper divisors (2388881).

7166631 is a wasteful number, since it uses less digits than its factorization.

7166631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388880.

The product of its digits is 4536, while the sum is 30.

The square root of 7166631 is about 2677.0564058309. The cubic root of 7166631 is about 192.7991054836.

The spelling of 7166631 in words is "seven million, one hundred sixty-six thousand, six hundred thirty-one".