66748465 has 16 divisors (see below), whose sum is σ = 93270528. Its totient is φ = 44905536.

The previous prime is 66748453. The next prime is 66748483. The reversal of 66748465 is 56484766.

It is a cyclic number.

It is not a de Polignac number, because 66748465 - 2⁵ = 66748433 is a prime.

It is a super-3 number, since 3×66748465³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16137 + ... + 19846.

It is an arithmetic number, because the mean of its divisors is an integer number (5829408).

Almost surely, 2^66748465 is an apocalyptic number.

It is an amenable number.

66748465 is a deficient number, since it is larger than the sum of its proper divisors (26522063).

66748465 is a wasteful number, since it uses less digits than its factorization.

66748465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36048.

The product of its digits is 967680, while the sum is 46.

The square root of 66748465 is about 8169.9733781696. The cubic root of 66748465 is about 405.6459032535.

The spelling of 66748465 in words is "sixty-six million, seven hundred forty-eight thousand, four hundred sixty-five".