70700621 has 4 divisors (see below), whose sum is σ = 71495100. Its totient is φ = 69906144.

The previous prime is 70700587. The next prime is 70700629. The reversal of 70700621 is 12600707.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7672900 + 63027721 = 2770^2 + 7939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70700621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70700629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397106 + ... + 397283.

It is an arithmetic number, because the mean of its divisors is an integer number (17873775).

Almost surely, 2^70700621 is an apocalyptic number.

It is an amenable number.

70700621 is a deficient number, since it is larger than the sum of its proper divisors (794479).

70700621 is an equidigital number, since it uses as much as digits as its factorization.

70700621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794478.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 70700621 is about 8408.3661314193. The cubic root of 70700621 is about 413.4989484749.

The spelling of 70700621 in words is "seventy million, seven hundred thousand, six hundred twenty-one".