66122460 has 48 divisors (see below), whose sum is σ = 205716000. Its totient is φ = 17632512.

The previous prime is 66122453. The next prime is 66122477. The reversal of 66122460 is 6422166.

It is a happy number.

66122460 is a `hidden beast` number, since 6 + 612 + 2 + 46 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 60685 + ... + 61764.

It is an arithmetic number, because the mean of its divisors is an integer number (4285750).

Almost surely, 2^66122460 is an apocalyptic number.

66122460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66122460 is an abundant number, since it is smaller than the sum of its proper divisors (139593540).

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

66122460 is a wasteful number, since it uses less digits than its factorization.

66122460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122467 (or 122459 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 66122460 is about 8131.5718037782. The cubic root of 66122460 is about 404.3737922066.

The spelling of 66122460 in words is "sixty-six million, one hundred twenty-two thousand, four hundred sixty".