666612094 has 4 divisors (see below), whose sum is σ = 999918144. Its totient is φ = 333306046.

The previous prime is 666612029. The next prime is 666612097. The reversal of 666612094 is 490216666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 490216666 = 2 ⋅245108333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666612097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166653022 + ... + 166653025.

It is an arithmetic number, because the mean of its divisors is an integer number (249979536).

Almost surely, 2^666612094 is an apocalyptic number.

666612094 is a deficient number, since it is larger than the sum of its proper divisors (333306050).

666612094 is a wasteful number, since it uses less digits than its factorization.

666612094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333306049.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 666612094 is about 25818.8321579424. The cubic root of 666612094 is about 873.5566272781.

The spelling of 666612094 in words is "six hundred sixty-six million, six hundred twelve thousand, ninety-four".