24690961 has 3 divisors (see below), whose sum is σ = 24695931. Its totient is φ = 24685992.

The previous prime is 24690929. The next prime is 24691001. The reversal of 24690961 is 16909642.

The square root of 24690961 is 4969.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 4977361 + 19713600 = 2231^2 + 4440^2 .

It is not a de Polignac number, because 24690961 - 2⁵ = 24690929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 24690961.

It is not an unprimeable number, because it can be changed into a prime (24690461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2485 + ... + 7453.

It is an arithmetic number, because the mean of its divisors is an integer number (8231977).

Almost surely, 2^24690961 is an apocalyptic number.

24690961 is the 4969-th square number.

24690961 is the 2485-th centered octagonal number.

It is an amenable number.

24690961 is a deficient number, since it is larger than the sum of its proper divisors (4970).

24690961 is an frugal number, since it uses more digits than its factorization.

24690961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938 (or 4969 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The cubic root of 24690961 is about 291.1919274885.

It can be divided in two parts, 24690 and 961, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 24690961 in words is "twenty-four million, six hundred ninety thousand, nine hundred sixty-one".