66607464 has 192 divisors, whose sum is σ = 223257600. Its totient is φ = 16329600.

The previous prime is 66607451. The next prime is 66607487. The reversal of 66607464 is 46470666.

It is a super-2 number, since 2×66607464² = 8873108521022592, which contains 22 as substring.

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, 245649 + ... + 245919.

It is an arithmetic number, because the mean of its divisors is an integer number (1162800).

Almost surely, 2^66607464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66607464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111628800).

66607464 is an abundant number, since it is smaller than the sum of its proper divisors (156650136).

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

66607464 is a wasteful number, since it uses less digits than its factorization.

66607464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 66607464 is about 8161.3395959242. The cubic root of 66607464 is about 405.3600699652.

The spelling of 66607464 in words is "sixty-six million, six hundred seven thousand, four hundred sixty-four".