66516452 has 12 divisors (see below), whose sum is σ = 120158976. Its totient is φ = 32185320.

The previous prime is 66516419. The next prime is 66516469. The reversal of 66516452 is 25461566.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268088 + ... + 268335.

It is an arithmetic number, because the mean of its divisors is an integer number (10013248).

Almost surely, 2^66516452 is an apocalyptic number.

66516452 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66516452 is a deficient number, since it is larger than the sum of its proper divisors (53642524).

66516452 is a wasteful number, since it uses less digits than its factorization.

66516452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536458 (or 536456 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 66516452 is about 8155.7618896091. The cubic root of 66516452 is about 405.1753587005.

The spelling of 66516452 in words is "sixty-six million, five hundred sixteen thousand, four hundred fifty-two".