70775220 has 48 divisors (see below), whose sum is σ = 201539520. Its totient is φ = 18552576.

The previous prime is 70775213. The next prime is 70775227. The reversal of 70775220 is 2257707.

It is an interprime number because it is at equal distance from previous prime (70775213) and next prime (70775227).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70775227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6457 + ... + 13536.

It is an arithmetic number, because the mean of its divisors is an integer number (4198740).

Almost surely, 2^70775220 is an apocalyptic number.

It is an amenable number.

70775220 is an abundant number, since it is smaller than the sum of its proper divisors (130764300).

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

70775220 is a wasteful number, since it uses less digits than its factorization.

70775220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20064 (or 20062 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 70775220 is about 8412.8009604412. The cubic root of 70775220 is about 413.6443303439.

The spelling of 70775220 in words is "seventy million, seven hundred seventy-five thousand, two hundred twenty".