666001054 has 8 divisors (see below), whose sum is σ = 999154800. Its totient is φ = 332949456.

The previous prime is 666001051. The next prime is 666001057. The reversal of 666001054 is 450100666.

It is an interprime number because it is at equal distance from previous prime (666001051) and next prime (666001057).

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

It is a super-2 number, since 2×666001054² = 887114807858221832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666001051) 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, 6354 + ... + 37045.

It is an arithmetic number, because the mean of its divisors is an integer number (124894350).

Almost surely, 2^666001054 is an apocalyptic number.

666001054 is a deficient number, since it is larger than the sum of its proper divisors (333153746).

666001054 is a wasteful number, since it uses less digits than its factorization.

666001054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51074.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 666001054 is about 25806.9962219550. The cubic root of 666001054 is about 873.2896348134.

The spelling of 666001054 in words is "six hundred sixty-six million, one thousand, fifty-four".