70523340 has 24 divisors (see below), whose sum is σ = 197465520. Its totient is φ = 18806208.

The previous prime is 70523303. The next prime is 70523407. The reversal of 70523340 is 4332507.

It is a self number, because there is not a number n which added to its sum of digits gives 70523340.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 587635 + ... + 587754.

It is an arithmetic number, because the mean of its divisors is an integer number (8227730).

Almost surely, 2^70523340 is an apocalyptic number.

It is an amenable number.

70523340 is an abundant number, since it is smaller than the sum of its proper divisors (126942180).

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

70523340 is a wasteful number, since it uses less digits than its factorization.

70523340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175401 (or 1175399 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 70523340 is about 8397.8175736319. The cubic root of 70523340 is about 413.1530445661.

Adding to 70523340 its reverse (4332507), we get a palindrome (74855847).

The spelling of 70523340 in words is "seventy million, five hundred twenty-three thousand, three hundred forty".