66345562 has 16 divisors (see below), whose sum is σ = 103772160. Its totient is φ = 31773168.

The previous prime is 66345557. The next prime is 66345571. The reversal of 66345562 is 26554366.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2863 + ... + 11869.

It is an arithmetic number, because the mean of its divisors is an integer number (6485760).

Almost surely, 2^66345562 is an apocalyptic number.

66345562 is a deficient number, since it is larger than the sum of its proper divisors (37426598).

66345562 is a wasteful number, since it uses less digits than its factorization.

66345562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9165.

The product of its digits is 129600, while the sum is 37.

The square root of 66345562 is about 8145.2785096644. The cubic root of 66345562 is about 404.8280772093.

It can be divided in two parts, 663 and 45562, that added together give a square (46225 = 215²).

The spelling of 66345562 in words is "sixty-six million, three hundred forty-five thousand, five hundred sixty-two".