70123679 has 4 divisors (see below), whose sum is σ = 70154784. Its totient is φ = 70092576.

The previous prime is 70123673. The next prime is 70123681. The reversal of 70123679 is 97632107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97632107 = 8111 ⋅12037.

It is a cyclic number.

It is not a de Polignac number, because 70123679 - 2⁴ = 70123663 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 (70123673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11882 + ... + 16775.

It is an arithmetic number, because the mean of its divisors is an integer number (17538696).

Almost surely, 2^70123679 is an apocalyptic number.

70123679 is a deficient number, since it is larger than the sum of its proper divisors (31105).

70123679 is a wasteful number, since it uses less digits than its factorization.

70123679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31104.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 70123679 is about 8373.9882373932. The cubic root of 70123679 is about 412.3711092869.

The spelling of 70123679 in words is "seventy million, one hundred twenty-three thousand, six hundred seventy-nine".