70423656 has 32 divisors (see below), whose sum is σ = 186416640. Its totient is φ = 22093568.

The previous prime is 70423643. The next prime is 70423657. The reversal of 70423656 is 65632407.

It is not an unprimeable number, because it can be changed into a prime (70423657) 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, 85896 + ... + 86711.

It is an arithmetic number, because the mean of its divisors is an integer number (5825520).

Almost surely, 2^70423656 is an apocalyptic number.

It is an amenable number.

70423656 is an abundant number, since it is smaller than the sum of its proper divisors (115992984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70423656 is a wasteful number, since it uses less digits than its factorization.

70423656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172633 (or 172629 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 70423656 is about 8391.8803613970. The cubic root of 70423656 is about 412.9582902805.

The spelling of 70423656 in words is "seventy million, four hundred twenty-three thousand, six hundred fifty-six".