45123666 has 32 divisors (see below), whose sum is σ = 105338880. Its totient is φ = 12617616.

The previous prime is 45123649. The next prime is 45123679. The reversal of 45123666 is 66632154.

It is a super-2 number, since 2×45123666² = 4072290466559112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9456 + ... + 13403.

It is an arithmetic number, because the mean of its divisors is an integer number (3291840).

Almost surely, 2^45123666 is an apocalyptic number.

45123666 is an abundant number, since it is smaller than the sum of its proper divisors (60215214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45123666 is a wasteful number, since it uses less digits than its factorization.

45123666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22918.

The product of its digits is 25920, while the sum is 33.

The square root of 45123666 is about 6717.4151278598. The cubic root of 45123666 is about 356.0148596667.

The spelling of 45123666 in words is "forty-five million, one hundred twenty-three thousand, six hundred sixty-six".