70987967 has 8 divisors (see below), whose sum is σ = 71668656. Its totient is φ = 70310592.

The previous prime is 70987919. The next prime is 70987981. The reversal of 70987967 is 76978907.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70987967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70977967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64163 + ... + 65259.

It is an arithmetic number, because the mean of its divisors is an integer number (8958582).

Almost surely, 2^70987967 is an apocalyptic number.

70987967 is a deficient number, since it is larger than the sum of its proper divisors (680689).

70987967 is a wasteful number, since it uses less digits than its factorization.

70987967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 70987967 is about 8425.4357157360. The cubic root of 70987967 is about 414.0583809164.

The spelling of 70987967 in words is "seventy million, nine hundred eighty-seven thousand, nine hundred sixty-seven".