66122145 has 48 divisors (see below), whose sum is σ = 118939392. Its totient is φ = 33955200.

The previous prime is 66122137. The next prime is 66122153. The reversal of 66122145 is 54122166.

66122145 is a `hidden beast` number, since 6 + 612 + 2 + 1 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (66122137) and next prime (66122153).

It is not a de Polignac number, because 66122145 - 2³ = 66122137 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251284 + ... + 251546.

It is an arithmetic number, because the mean of its divisors is an integer number (2477904).

Almost surely, 2^66122145 is an apocalyptic number.

It is an amenable number.

66122145 is a deficient number, since it is larger than the sum of its proper divisors (52817247).

66122145 is a wasteful number, since it uses less digits than its factorization.

66122145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 459 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 66122145 is about 8131.5524348060. The cubic root of 66122145 is about 404.3731500751.

The spelling of 66122145 in words is "sixty-six million, one hundred twenty-two thousand, one hundred forty-five".