66071465 has 8 divisors (see below), whose sum is σ = 79412928. Its totient is φ = 52772400.

The previous prime is 66071461. The next prime is 66071477. The reversal of 66071465 is 56417066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66071465 - 2² = 66071461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66071461) 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, 7061 + ... + 13490.

It is an arithmetic number, because the mean of its divisors is an integer number (9926616).

Almost surely, 2^66071465 is an apocalyptic number.

It is an amenable number.

66071465 is a deficient number, since it is larger than the sum of its proper divisors (13341463).

66071465 is a wasteful number, since it uses less digits than its factorization.

66071465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21199.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66071465 is about 8128.4355813404. The cubic root of 66071465 is about 404.2698116785.

The spelling of 66071465 in words is "sixty-six million, seventy-one thousand, four hundred sixty-five".