70858989 has 16 divisors (see below), whose sum is σ = 105163200. Its totient is φ = 47155248.

The previous prime is 70858981. The next prime is 70859011. The reversal of 70858989 is 98985807.

It is not a de Polignac number, because 70858989 - 2³ = 70858981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70858981) 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, 15622 + ... + 19640.

It is an arithmetic number, because the mean of its divisors is an integer number (6572700).

Almost surely, 2^70858989 is an apocalyptic number.

It is an amenable number.

70858989 is a deficient number, since it is larger than the sum of its proper divisors (34304211).

70858989 is a wasteful number, since it uses less digits than its factorization.

70858989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681 (or 4675 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 70858989 is about 8417.7781510325. The cubic root of 70858989 is about 413.8074614048.

The spelling of 70858989 in words is "seventy million, eight hundred fifty-eight thousand, nine hundred eighty-nine".