916624666 has 8 divisors (see below), whose sum is σ = 1455815700. Its totient is φ = 431352768.

The previous prime is 916624661. The next prime is 916624669. The reversal of 916624666 is 666426619.

It can be written as a sum of positive squares in 2 ways, for example, as 796086225 + 120538441 = 28215^2 + 10979^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×916624666² = 1680401556639223112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (916624661) 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, 13479741 + ... + 13479808.

Almost surely, 2^916624666 is an apocalyptic number.

916624666 is a deficient number, since it is larger than the sum of its proper divisors (539191034).

916624666 is a wasteful number, since it uses less digits than its factorization.

916624666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26959568.

The product of its digits is 559872, while the sum is 46.

The square root of 916624666 is about 30275.8099148479. The cubic root of 916624666 is about 971.3979439573.

The spelling of 916624666 in words is "nine hundred sixteen million, six hundred twenty-four thousand, six hundred sixty-six".