22740687 has 6 divisors (see below), whose sum is σ = 32847672. Its totient is φ = 15160452.

The previous prime is 22740673. The next prime is 22740709. The reversal of 22740687 is 78604722.

It is not a de Polignac number, because 22740687 - 2⁶ = 22740623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22740637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1263363 + ... + 1263380.

It is an arithmetic number, because the mean of its divisors is an integer number (5474612).

Almost surely, 2^22740687 is an apocalyptic number.

22740687 is a deficient number, since it is larger than the sum of its proper divisors (10106985).

22740687 is a wasteful number, since it uses less digits than its factorization.

22740687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526749 (or 2526746 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 22740687 is about 4768.7196394840. The cubic root of 22740687 is about 283.3138854779.

The spelling of 22740687 in words is "twenty-two million, seven hundred forty thousand, six hundred eighty-seven".