66746007 has 12 divisors (see below), whose sum is σ = 99521344. Its totient is φ = 43061760.

The previous prime is 66745997. The next prime is 66746033. The reversal of 66746007 is 70064766.

It is not a de Polignac number, because 66746007 - 2¹⁹ = 66221719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66746087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119338 + ... + 119895.

Almost surely, 2^66746007 is an apocalyptic number.

66746007 is a deficient number, since it is larger than the sum of its proper divisors (32775337).

66746007 is a wasteful number, since it uses less digits than its factorization.

66746007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239270 (or 239267 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 66746007 is about 8169.8229478980. The cubic root of 66746007 is about 405.6409239137.

The spelling of 66746007 in words is "sixty-six million, seven hundred forty-six thousand, seven".