70650891 has 12 divisors (see below), whose sum is σ = 105343680. Its totient is φ = 45581040.

The previous prime is 70650889. The next prime is 70650901. The reversal of 70650891 is 19805607.

It is not a de Polignac number, because 70650891 - 2¹ = 70650889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70650821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126336 + ... + 126893.

It is an arithmetic number, because the mean of its divisors is an integer number (8778640).

Almost surely, 2^70650891 is an apocalyptic number.

70650891 is a deficient number, since it is larger than the sum of its proper divisors (34692789).

70650891 is a wasteful number, since it uses less digits than its factorization.

70650891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253266 (or 253263 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 70650891 is about 8405.4084374288. The cubic root of 70650891 is about 413.4019756071.

The spelling of 70650891 in words is "seventy million, six hundred fifty thousand, eight hundred ninety-one".