22770691 has 4 divisors (see below), whose sum is σ = 22780800. Its totient is φ = 22760584.

The previous prime is 22770689. The next prime is 22770697. The reversal of 22770691 is 19607722.

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 is a cyclic number.

It is not a de Polignac number, because 22770691 - 2¹ = 22770689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22770697) 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, 30 + ... + 6748.

It is an arithmetic number, because the mean of its divisors is an integer number (5695200).

Almost surely, 2^22770691 is an apocalyptic number.

22770691 is a deficient number, since it is larger than the sum of its proper divisors (10109).

22770691 is an equidigital number, since it uses as much as digits as its factorization.

22770691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10108.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 22770691 is about 4771.8645202897. The cubic root of 22770691 is about 283.4384319061.

The spelling of 22770691 in words is "twenty-two million, seven hundred seventy thousand, six hundred ninety-one".