70264891 has 4 divisors (see below), whose sum is σ = 71154400. Its totient is φ = 69375384.

The previous prime is 70264871. The next prime is 70264897. The reversal of 70264891 is 19846207.

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

It is a cyclic number.

It is not a de Polignac number, because 70264891 - 2¹⁹ = 69740603 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 70264891.

It is not an unprimeable number, because it can be changed into a prime (70264897) 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, 444636 + ... + 444793.

It is an arithmetic number, because the mean of its divisors is an integer number (17788600).

Almost surely, 2^70264891 is an apocalyptic number.

70264891 is a deficient number, since it is larger than the sum of its proper divisors (889509).

70264891 is an equidigital number, since it uses as much as digits as its factorization.

70264891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889508.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 70264891 is about 8382.4155826349. The cubic root of 70264891 is about 412.6477286609.

The spelling of 70264891 in words is "seventy million, two hundred sixty-four thousand, eight hundred ninety-one".