70641085 has 4 divisors (see below), whose sum is σ = 84769308. Its totient is φ = 56512864.

The previous prime is 70641061. The next prime is 70641101. The reversal of 70641085 is 58014607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58014607 = 7 ⋅8287801.

It can be written as a sum of positive squares in 2 ways, for example, as 20557156 + 50083929 = 4534^2 + 7077^2 .

It is a cyclic number.

It is not a de Polignac number, because 70641085 - 2⁷ = 70640957 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7064104 + ... + 7064113.

It is an arithmetic number, because the mean of its divisors is an integer number (21192327).

Almost surely, 2^70641085 is an apocalyptic number.

It is an amenable number.

70641085 is a deficient number, since it is larger than the sum of its proper divisors (14128223).

70641085 is a wasteful number, since it uses less digits than its factorization.

70641085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14128222.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 70641085 is about 8404.8251022850. The cubic root of 70641085 is about 413.3828486611.

The spelling of 70641085 in words is "seventy million, six hundred forty-one thousand, eighty-five".