23285661 has 32 divisors (see below), whose sum is σ = 36799488. Its totient is φ = 12821760.

The previous prime is 23285641. The next prime is 23285671. The reversal of 23285661 is 16658232.

It is not a de Polignac number, because 23285661 - 2⁷ = 23285533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23285641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96501 + ... + 96741.

It is an arithmetic number, because the mean of its divisors is an integer number (1149984).

Almost surely, 2^23285661 is an apocalyptic number.

23285661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23285661 is a deficient number, since it is larger than the sum of its proper divisors (13513827).

23285661 is a wasteful number, since it uses less digits than its factorization.

23285661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its digits is 17280, while the sum is 33.

The square root of 23285661 is about 4825.5218370659. The cubic root of 23285661 is about 285.5592220849.

The spelling of 23285661 in words is "twenty-three million, two hundred eighty-five thousand, six hundred sixty-one".