70610257 has 8 divisors (see below), whose sum is σ = 73617984. Its totient is φ = 67664688.

The previous prime is 70610233. The next prime is 70610269. The reversal of 70610257 is 75201607.

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 70610257 - 2¹⁹ = 70085969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70610297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13213 + ... + 17770.

It is an arithmetic number, because the mean of its divisors is an integer number (9202248).

Almost surely, 2^70610257 is an apocalyptic number.

It is an amenable number.

70610257 is a deficient number, since it is larger than the sum of its proper divisors (3007727).

70610257 is a wasteful number, since it uses less digits than its factorization.

70610257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31079.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 70610257 is about 8402.9909556062. The cubic root of 70610257 is about 413.3227060367.

The spelling of 70610257 in words is "seventy million, six hundred ten thousand, two hundred fifty-seven".