770220249 has 4 divisors (see below), whose sum is σ = 1026960336. Its totient is φ = 513480164.

The previous prime is 770220247. The next prime is 770220293. The reversal of 770220249 is 942022077.

770220249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 770220249 - 2¹ = 770220247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (770220247) 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, 128370039 + ... + 128370044.

It is an arithmetic number, because the mean of its divisors is an integer number (256740084).

Almost surely, 2^770220249 is an apocalyptic number.

It is an amenable number.

770220249 is a deficient number, since it is larger than the sum of its proper divisors (256740087).

770220249 is a wasteful number, since it uses less digits than its factorization.

770220249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256740086.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 770220249 is about 27752.8421787751. The cubic root of 770220249 is about 916.6530278669.

The spelling of 770220249 in words is "seven hundred seventy million, two hundred twenty thousand, two hundred forty-nine".