70490624 has 60 divisors (see below), whose sum is σ = 147060342. Its totient is φ = 33730560.

The previous prime is 70490617. The next prime is 70490657. The reversal of 70490624 is 42609407.

It can be written as a sum of positive squares in 3 ways, for example, as 36385024 + 34105600 = 6032^2 + 5840^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1155554 + ... + 1155614.

Almost surely, 2^70490624 is an apocalyptic number.

70490624 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70490624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73530171).

70490624 is an abundant number, since it is smaller than the sum of its proper divisors (76569718).

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

70490624 is an frugal number, since it uses more digits than its factorization.

70490624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 70490624 is about 8395.8694606336. The cubic root of 70490624 is about 413.0891470172.

The spelling of 70490624 in words is "seventy million, four hundred ninety thousand, six hundred twenty-four".