9870657 has 8 divisors (see below), whose sum is σ = 13733184. Its totient is φ = 6294288.

The previous prime is 9870647. The next prime is 9870661. The reversal of 9870657 is 7560789.

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

It is not a de Polignac number, because 9870657 - 2⁸ = 9870401 is a prime.

It is a super-2 number, since 2×9870657² = 194859739223298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9870647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71458 + ... + 71595.

It is an arithmetic number, because the mean of its divisors is an integer number (1716648).

Almost surely, 2^9870657 is an apocalyptic number.

It is an amenable number.

9870657 is a deficient number, since it is larger than the sum of its proper divisors (3862527).

9870657 is a wasteful number, since it uses less digits than its factorization.

9870657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143079.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 9870657 is about 3141.7601754431. The cubic root of 9870657 is about 214.5105650601.

The spelling of 9870657 in words is "nine million, eight hundred seventy thousand, six hundred fifty-seven".