70645673 has 8 divisors (see below), whose sum is σ = 84248448. Its totient is φ = 57920544.

The previous prime is 70645651. The next prime is 70645709. The reversal of 70645673 is 37654607.

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

It is a cyclic number.

It is not a de Polignac number, because 70645673 - 2⁶ = 70645609 is a prime.

It is a super-2 number, since 2×70645673² = 9981622227245858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70645613) 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, 219236 + ... + 219557.

It is an arithmetic number, because the mean of its divisors is an integer number (10531056).

Almost surely, 2^70645673 is an apocalyptic number.

It is an amenable number.

70645673 is a deficient number, since it is larger than the sum of its proper divisors (13602775).

70645673 is a wasteful number, since it uses less digits than its factorization.

70645673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438823.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 70645673 is about 8405.0980363111. The cubic root of 70645673 is about 413.3917979359.

The spelling of 70645673 in words is "seventy million, six hundred forty-five thousand, six hundred seventy-three".