10661654 has 8 divisors (see below), whose sum is σ = 16263720. Its totient is φ = 5240416.

The previous prime is 10661653. The next prime is 10661671. The reversal of 10661654 is 45616601.

10661654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×10661654² = 227341732031432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661653) 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, 45059 + ... + 45294.

It is an arithmetic number, because the mean of its divisors is an integer number (2032965).

Almost surely, 2^10661654 is an apocalyptic number.

10661654 is a deficient number, since it is larger than the sum of its proper divisors (5602066).

10661654 is an equidigital number, since it uses as much as digits as its factorization.

10661654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90414.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 10661654 is about 3265.2188288076. The cubic root of 10661654 is about 220.0939956470.

It can be divided in two parts, 1066165 and 4, that multiplied together give a triangular number (4264660 = T₂₉₂₀).

The spelling of 10661654 in words is "ten million, six hundred sixty-one thousand, six hundred fifty-four".