70638685 has 8 divisors (see below), whose sum is σ = 91287000. Its totient is φ = 52163904.

The previous prime is 70638683. The next prime is 70638691. The reversal of 70638685 is 58683607.

It can be written as a sum of positive squares in 4 ways, for example, as 799236 + 69839449 = 894^2 + 8357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70638685 - 2¹ = 70638683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70638683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543310 + ... + 543439.

It is an arithmetic number, because the mean of its divisors is an integer number (11410875).

Almost surely, 2^70638685 is an apocalyptic number.

It is an amenable number.

70638685 is a deficient number, since it is larger than the sum of its proper divisors (20648315).

70638685 is a wasteful number, since it uses less digits than its factorization.

70638685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086767.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 70638685 is about 8404.6823259419. The cubic root of 70638685 is about 413.3781671075.

The spelling of 70638685 in words is "seventy million, six hundred thirty-eight thousand, six hundred eighty-five".