70660889 has 8 divisors (see below), whose sum is σ = 76176072. Its totient is φ = 65157120.

The previous prime is 70660871. The next prime is 70660897. The reversal of 70660889 is 98806607.

It can be written as a sum of positive squares in 4 ways, for example, as 235225 + 70425664 = 485^2 + 8392^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70660889 - 2⁸ = 70660633 is a prime.

It is a super-2 number, since 2×70660889² = 9985922468540642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70660859) 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, 13529 + ... + 18009.

It is an arithmetic number, because the mean of its divisors is an integer number (9522009).

Almost surely, 2^70660889 is an apocalyptic number.

It is an amenable number.

70660889 is a deficient number, since it is larger than the sum of its proper divisors (5515183).

70660889 is a wasteful number, since it uses less digits than its factorization.

70660889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 70660889 is about 8406.0031525095. The cubic root of 70660889 is about 413.4214752338.

The spelling of 70660889 in words is "seventy million, six hundred sixty thousand, eight hundred eighty-nine".