70475840 has 56 divisors (see below), whose sum is σ = 169392600. Its totient is φ = 27926528.

The previous prime is 70475831. The next prime is 70475851. The reversal of 70475840 is 4857407.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1784896 + 68690944 = 1336^2 + 8288^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 70475840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35186 + ... + 37134.

Almost surely, 2^70475840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70475840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84696300).

70475840 is an abundant number, since it is smaller than the sum of its proper divisors (98916760).

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

70475840 is a wasteful number, since it uses less digits than its factorization.

70475840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079 (or 2069 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 70475840 is about 8394.9889815294. The cubic root of 70475840 is about 413.0602659330.

The spelling of 70475840 in words is "seventy million, four hundred seventy-five thousand, eight hundred forty".