70345989 has 20 divisors (see below), whose sum is σ = 120097824. Its totient is φ = 40197384.

The previous prime is 70345987. The next prime is 70345997. The reversal of 70345989 is 98954307.

It is not a de Polignac number, because 70345989 - 2¹ = 70345987 is a prime.

It is a super-3 number, since 3×70345989³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70345987) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61467 + ... + 62600.

Almost surely, 2^70345989 is an apocalyptic number.

It is an amenable number.

70345989 is a deficient number, since it is larger than the sum of its proper divisors (49751835).

70345989 is a wasteful number, since it uses less digits than its factorization.

70345989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124086 (or 124077 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 70345989 is about 8387.2515760528. The cubic root of 70345989 is about 412.8064235581.

The spelling of 70345989 in words is "seventy million, three hundred forty-five thousand, nine hundred eighty-nine".