70689142 has 4 divisors (see below), whose sum is σ = 106033716. Its totient is φ = 35344570.

The previous prime is 70689137. The next prime is 70689149. The reversal of 70689142 is 24198607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24198607 = 457 ⋅52951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70689149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17672284 + ... + 17672287.

It is an arithmetic number, because the mean of its divisors is an integer number (26508429).

Almost surely, 2^70689142 is an apocalyptic number.

70689142 is a deficient number, since it is larger than the sum of its proper divisors (35344574).

70689142 is a wasteful number, since it uses less digits than its factorization.

70689142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35344573.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 70689142 is about 8407.6835097427. The cubic root of 70689142 is about 413.4765686086.

The spelling of 70689142 in words is "seventy million, six hundred eighty-nine thousand, one hundred forty-two".