9661901 has 8 divisors (see below), whose sum is σ = 10048800. Its totient is φ = 9278640.

The previous prime is 9661889. The next prime is 9661913. The reversal of 9661901 is 1091669.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9661889) and next prime (9661913).

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 9661901 - 2²² = 5467597 is a prime.

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 (9661991) 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, 5330 + ... + 6908.

It is an arithmetic number, because the mean of its divisors is an integer number (1256100).

Almost surely, 2^9661901 is an apocalyptic number.

It is an amenable number.

9661901 is a deficient number, since it is larger than the sum of its proper divisors (386899).

9661901 is a wasteful number, since it uses less digits than its factorization.

9661901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 9661901 is about 3108.3598569020. The cubic root of 9661901 is about 212.9875384864.

The spelling of 9661901 in words is "nine million, six hundred sixty-one thousand, nine hundred one".