70642105 has 8 divisors (see below), whose sum is σ = 85135752. Its totient is φ = 56270208.

The previous prime is 70642079. The next prime is 70642111. The reversal of 70642105 is 50124607.

It can be written as a sum of positive squares in 4 ways, for example, as 16883881 + 53758224 = 4109^2 + 7332^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70642105 - 2⁵ = 70642073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70642105.

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, 29154 + ... + 31483.

It is an arithmetic number, because the mean of its divisors is an integer number (10641969).

Almost surely, 2^70642105 is an apocalyptic number.

It is an amenable number.

70642105 is a deficient number, since it is larger than the sum of its proper divisors (14493647).

70642105 is a wasteful number, since it uses less digits than its factorization.

70642105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60875.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 70642105 is about 8404.8857814964. The cubic root of 70642105 is about 413.3848382892.

The spelling of 70642105 in words is "seventy million, six hundred forty-two thousand, one hundred five".