70906589 has 8 divisors (see below), whose sum is σ = 78223992. Its totient is φ = 63855360.

The previous prime is 70906573. The next prime is 70906603. The reversal of 70906589 is 98560907.

It can be written as a sum of positive squares in 4 ways, for example, as 11847364 + 59059225 = 3442^2 + 7685^2 .

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 70906589 - 2⁴ = 70906573 is a prime.

It is a super-2 number, since 2×70906589² = 10055488727229842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70906519) 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, 65984 + ... + 67049.

It is an arithmetic number, because the mean of its divisors is an integer number (9777999).

Almost surely, 2^70906589 is an apocalyptic number.

It is an amenable number.

70906589 is a deficient number, since it is larger than the sum of its proper divisors (7317403).

70906589 is a wasteful number, since it uses less digits than its factorization.

70906589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133087.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 70906589 is about 8420.6050257686. The cubic root of 70906589 is about 413.9000999748.

The spelling of 70906589 in words is "seventy million, nine hundred six thousand, five hundred eighty-nine".