66455466 has 48 divisors (see below), whose sum is σ = 168674400. Its totient is φ = 17260320.

The previous prime is 66455449. The next prime is 66455471.

It is a happy number.

66455466 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×66455466² = 8832657922554312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7041 + ... + 13508.

It is an arithmetic number, because the mean of its divisors is an integer number (3514050).

Almost surely, 2^66455466 is an apocalyptic number.

66455466 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66455466 is an abundant number, since it is smaller than the sum of its proper divisors (102218934).

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

66455466 is a wasteful number, since it uses less digits than its factorization.

66455466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20579 (or 20572 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 66455466 is about 8152.0222031101. The cubic root of 66455466 is about 405.0514917003.

The spelling of 66455466 in words is "sixty-six million, four hundred fifty-five thousand, four hundred sixty-six".