45668218 has 8 divisors (see below), whose sum is σ = 68706612. Its totient is φ = 22766016.

The previous prime is 45668213. The next prime is 45668251. The reversal of 45668218 is 81286654.

It can be written as a sum of positive squares in 2 ways, for example, as 44315649 + 1352569 = 6657^2 + 1163^2 .

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

It is a super-2 number, since 2×45668218² = 4171172270591048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45668213) 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, 33205 + ... + 34552.

Almost surely, 2^45668218 is an apocalyptic number.

45668218 is a deficient number, since it is larger than the sum of its proper divisors (23038394).

45668218 is a wasteful number, since it uses less digits than its factorization.

45668218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68096.

The product of its digits is 92160, while the sum is 40.

The square root of 45668218 is about 6757.8264257082. The cubic root of 45668218 is about 357.4412650667.

The spelling of 45668218 in words is "forty-five million, six hundred sixty-eight thousand, two hundred eighteen".