70678881 has 48 divisors (see below), whose sum is σ = 126555520. Its totient is φ = 37013760.

The previous prime is 70678831. The next prime is 70678897. The reversal of 70678881 is 18887607.

It is not a de Polignac number, because 70678881 - 2¹³ = 70670689 is a prime.

It is a super-2 number, since 2×70678881² = 9991008438824322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70678801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172605 + ... + 173013.

Almost surely, 2^70678881 is an apocalyptic number.

It is an amenable number.

70678881 is a deficient number, since it is larger than the sum of its proper divisors (55876639).

70678881 is a wasteful number, since it uses less digits than its factorization.

70678881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 70678881 is about 8407.0732719538. The cubic root of 70678881 is about 413.4565613475.

The spelling of 70678881 in words is "seventy million, six hundred seventy-eight thousand, eight hundred eighty-one".