9961870 has 8 divisors (see below), whose sum is σ = 17931384. Its totient is φ = 3984744.

The previous prime is 9961867. The next prime is 9961873. The reversal of 9961870 is 781699.

It is an interprime number because it is at equal distance from previous prime (9961867) and next prime (9961873).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498084 + ... + 498103.

It is an arithmetic number, because the mean of its divisors is an integer number (2241423).

Almost surely, 2^9961870 is an apocalyptic number.

9961870 is a deficient number, since it is larger than the sum of its proper divisors (7969514).

9961870 is a wasteful number, since it uses less digits than its factorization.

9961870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996194.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 9961870 is about 3156.2430197943. The cubic root of 9961870 is about 215.1692915787.

The spelling of 9961870 in words is "nine million, nine hundred sixty-one thousand, eight hundred seventy".