70278564 has 12 divisors (see below), whose sum is σ = 163983344. Its totient is φ = 23426184.

The previous prime is 70278557. The next prime is 70278589. The reversal of 70278564 is 46587207.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×70278564³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2928262 + ... + 2928285.

Almost surely, 2^70278564 is an apocalyptic number.

It is an amenable number.

70278564 is an abundant number, since it is smaller than the sum of its proper divisors (93704780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70278564 is a wasteful number, since it uses less digits than its factorization.

70278564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5856554 (or 5856552 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 70278564 is about 8383.2311193239. The cubic root of 70278564 is about 412.6744929353.

The spelling of 70278564 in words is "seventy million, two hundred seventy-eight thousand, five hundred sixty-four".