70478523 has 24 divisors (see below), whose sum is σ = 103454208. Its totient is φ = 46230912.

The previous prime is 70478519. The next prime is 70478561. The reversal of 70478523 is 32587407.

It is not a de Polignac number, because 70478523 - 2² = 70478519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70478423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225015 + ... + 225327.

It is an arithmetic number, because the mean of its divisors is an integer number (4310592).

Almost surely, 2^70478523 is an apocalyptic number.

70478523 is a deficient number, since it is larger than the sum of its proper divisors (32975685).

70478523 is a wasteful number, since it uses less digits than its factorization.

70478523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 70478523 is about 8395.1487777168. The cubic root of 70478523 is about 413.0655075715.

The spelling of 70478523 in words is "seventy million, four hundred seventy-eight thousand, five hundred twenty-three".