166070407 has 4 divisors (see below), whose sum is σ = 167378176. Its totient is φ = 164762640.

The previous prime is 166070369. The next prime is 166070423. The reversal of 166070407 is 704070661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166070407 is a prime.

It is a super-2 number, since 2×166070407² = 55158760162291298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166070447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653694 + ... + 653947.

It is an arithmetic number, because the mean of its divisors is an integer number (41844544).

Almost surely, 2^166070407 is an apocalyptic number.

166070407 is a deficient number, since it is larger than the sum of its proper divisors (1307769).

166070407 is a wasteful number, since it uses less digits than its factorization.

166070407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307768.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 166070407 is about 12886.8307585690. The cubic root of 166070407 is about 549.6641552966.

The spelling of 166070407 in words is "one hundred sixty-six million, seventy thousand, four hundred seven".