70312887 has 16 divisors (see below), whose sum is σ = 104582880. Its totient is φ = 46688256.

The previous prime is 70312883. The next prime is 70312919. The reversal of 70312887 is 78821307.

It is not a de Polignac number, because 70312887 - 2² = 70312883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70312883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1873 + ... + 12005.

It is an arithmetic number, because the mean of its divisors is an integer number (6536430).

Almost surely, 2^70312887 is an apocalyptic number.

70312887 is a deficient number, since it is larger than the sum of its proper divisors (34269993).

70312887 is a wasteful number, since it uses less digits than its factorization.

70312887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10399 (or 10393 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 70312887 is about 8385.2779918140. The cubic root of 70312887 is about 412.7416633524.

The spelling of 70312887 in words is "seventy million, three hundred twelve thousand, eight hundred eighty-seven".