66032253 has 60 divisors (see below), whose sum is σ = 116531712. Its totient is φ = 37149840.

The previous prime is 66032249. The next prime is 66032261. The reversal of 66032253 is 35223066.

66032253 is a `hidden beast` number, since 6 + 603 + 2 + 2 + 53 = 666.

It is not a de Polignac number, because 66032253 - 2² = 66032249 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66032243) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 503998 + ... + 504128.

Almost surely, 2^66032253 is an apocalyptic number.

66032253 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

66032253 is a deficient number, since it is larger than the sum of its proper divisors (50499459).

66032253 is a wasteful number, since it uses less digits than its factorization.

66032253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 66032253 is about 8126.0231971119. The cubic root of 66032253 is about 404.1898206926.

The spelling of 66032253 in words is "sixty-six million, thirty-two thousand, two hundred fifty-three".