770597221 has 4 divisors (see below), whose sum is σ = 804101472. Its totient is φ = 737092972.

The previous prime is 770597209. The next prime is 770597227. The reversal of 770597221 is 122795077.

It is a happy number.

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 770597221 - 2¹¹ = 770595173 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 (770597227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16752091 + ... + 16752136.

It is an arithmetic number, because the mean of its divisors is an integer number (201025368).

Almost surely, 2^770597221 is an apocalyptic number.

It is an amenable number.

770597221 is a deficient number, since it is larger than the sum of its proper divisors (33504251).

770597221 is a wasteful number, since it uses less digits than its factorization.

770597221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33504250.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 770597221 is about 27759.6329406568. The cubic root of 770597221 is about 916.8025505374.

The spelling of 770597221 in words is "seven hundred seventy million, five hundred ninety-seven thousand, two hundred twenty-one".