70999140 has 96 divisors (see below), whose sum is σ = 215115264. Its totient is φ = 17428480.

The previous prime is 70999139. The next prime is 70999153. The reversal of 70999140 is 4199907.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 47200 + ... + 48680.

It is an arithmetic number, because the mean of its divisors is an integer number (2240784).

Almost surely, 2^70999140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70999140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107557632).

70999140 is an abundant number, since it is smaller than the sum of its proper divisors (144116124).

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

70999140 is a wasteful number, since it uses less digits than its factorization.

70999140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1555 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 70999140 is about 8426.0987414105. The cubic root of 70999140 is about 414.0801030561.

The spelling of 70999140 in words is "seventy million, nine hundred ninety-nine thousand, one hundred forty".