66652407 has 12 divisors (see below), whose sum is σ = 97012344. Its totient is φ = 44094960.

The previous prime is 66652351. The next prime is 66652447. The reversal of 66652407 is 70425666.

It is not a de Polignac number, because 66652407 - 2⁶ = 66652343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66652447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27088 + ... + 29445.

It is an arithmetic number, because the mean of its divisors is an integer number (8084362).

Almost surely, 2^66652407 is an apocalyptic number.

66652407 is a deficient number, since it is larger than the sum of its proper divisors (30359937).

66652407 is a wasteful number, since it uses less digits than its factorization.

66652407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56670 (or 56667 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 66652407 is about 8164.0925398969. The cubic root of 66652407 is about 405.4512209191.

The spelling of 66652407 in words is "sixty-six million, six hundred fifty-two thousand, four hundred seven".