66652992 has 168 divisors, whose sum is σ = 222739712. Its totient is φ = 18662400.

The previous prime is 66652987. The next prime is 66652997. The reversal of 66652992 is 29925666.

It is an interprime number because it is at equal distance from previous prime (66652987) and next prime (66652997).

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66652997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245817 + ... + 246087.

Almost surely, 2^66652992 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 66652992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111369856).

66652992 is an abundant number, since it is smaller than the sum of its proper divisors (156086720).

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

66652992 is a wasteful number, since it uses less digits than its factorization.

66652992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 344 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 66652992 is about 8164.1283674376. The cubic root of 66652992 is about 405.4524071141.

The spelling of 66652992 in words is "sixty-six million, six hundred fifty-two thousand, nine hundred ninety-two".