23770661 has 4 divisors (see below), whose sum is σ = 24804192. Its totient is φ = 22737132.

The previous prime is 23770657. The next prime is 23770697. The reversal of 23770661 is 16607732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23770661 - 2² = 23770657 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 (23770631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516731 + ... + 516776.

It is an arithmetic number, because the mean of its divisors is an integer number (6201048).

Almost surely, 2^23770661 is an apocalyptic number.

It is an amenable number.

23770661 is a deficient number, since it is larger than the sum of its proper divisors (1033531).

23770661 is a wasteful number, since it uses less digits than its factorization.

23770661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033530.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 23770661 is about 4875.5164854608. The cubic root of 23770661 is about 287.5281827445.

The spelling of 23770661 in words is "twenty-three million, seven hundred seventy thousand, six hundred sixty-one".