70987599 has 6 divisors (see below), whose sum is σ = 102537656. Its totient is φ = 47325060.

The previous prime is 70987573. The next prime is 70987603. The reversal of 70987599 is 99578907.

It is not a de Polignac number, because 70987599 - 2¹⁵ = 70954831 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 (70987519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3943747 + ... + 3943764.

Almost surely, 2^70987599 is an apocalyptic number.

70987599 is a deficient number, since it is larger than the sum of its proper divisors (31550057).

70987599 is a wasteful number, since it uses less digits than its factorization.

70987599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7887517 (or 7887514 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 70987599 is about 8425.4138770745. The cubic root of 70987599 is about 414.0576654255.

The spelling of 70987599 in words is "seventy million, nine hundred eighty-seven thousand, five hundred ninety-nine".