66503252 has 24 divisors (see below), whose sum is σ = 124721856. Its totient is φ = 30915968.

The previous prime is 66503251. The next prime is 66503257. The reversal of 66503252 is 25230566.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66503251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248 + ... + 11535.

It is an arithmetic number, because the mean of its divisors is an integer number (5196744).

Almost surely, 2^66503252 is an apocalyptic number.

It is an amenable number.

66503252 is a deficient number, since it is larger than the sum of its proper divisors (58218604).

66503252 is a wasteful number, since it uses less digits than its factorization.

66503252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11887 (or 11885 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 66503252 is about 8154.9526056256. The cubic root of 66503252 is about 405.1485549630.

The spelling of 66503252 in words is "sixty-six million, five hundred three thousand, two hundred fifty-two".