66612046 has 4 divisors (see below), whose sum is σ = 99918072. Its totient is φ = 33306022.

The previous prime is 66612041. The next prime is 66612083. The reversal of 66612046 is 64021666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64021666 = 2 ⋅32010833.

It is a super-2 number, since 2×66612046² = 8874329344612232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66611999 and 66612017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66612041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16653010 + ... + 16653013.

It is an arithmetic number, because the mean of its divisors is an integer number (24979518).

Almost surely, 2^66612046 is an apocalyptic number.

66612046 is a deficient number, since it is larger than the sum of its proper divisors (33306026).

66612046 is a wasteful number, since it uses less digits than its factorization.

66612046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33306025.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 66612046 is about 8161.6203048169. The cubic root of 66612046 is about 405.3693648056.

The spelling of 66612046 in words is "sixty-six million, six hundred twelve thousand, forty-six".