66503862 has 16 divisors (see below), whose sum is σ = 147786480. Its totient is φ = 22167936.

The previous prime is 66503849. The next prime is 66503869. The reversal of 66503862 is 26830566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66503869) 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, 615723 + ... + 615830.

It is an arithmetic number, because the mean of its divisors is an integer number (9236655).

Almost surely, 2^66503862 is an apocalyptic number.

66503862 is an abundant number, since it is smaller than the sum of its proper divisors (81282618).

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

66503862 is a wasteful number, since it uses less digits than its factorization.

66503862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231564 (or 1231558 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 66503862 is about 8154.9900061251. The cubic root of 66503862 is about 405.1497936987.

The spelling of 66503862 in words is "sixty-six million, five hundred three thousand, eight hundred sixty-two".