10403661 has 8 divisors (see below), whose sum is σ = 13914784. Its totient is φ = 6914160.

The previous prime is 10403639. The next prime is 10403669. The reversal of 10403661 is 16630401.

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

It is not a de Polignac number, because 10403661 - 2⁶ = 10403597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10403669) 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, 4246 + ... + 6231.

It is an arithmetic number, because the mean of its divisors is an integer number (1739348).

Almost surely, 2^10403661 is an apocalyptic number.

It is an amenable number.

10403661 is a deficient number, since it is larger than the sum of its proper divisors (3511123).

10403661 is a wasteful number, since it uses less digits than its factorization.

10403661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10811.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 10403661 is about 3225.4706633296. The cubic root of 10403661 is about 218.3041863596.

The spelling of 10403661 in words is "ten million, four hundred three thousand, six hundred sixty-one".