770032221 has 32 divisors (see below), whose sum is σ = 1248825600. Its totient is φ = 411995136.

The previous prime is 770032217. The next prime is 770032243. The reversal of 770032221 is 122230077.

It is not a de Polignac number, because 770032221 - 2² = 770032217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 770032191 and 770032200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770032121) 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 31 ways as a sum of consecutive naturals, for example, 64855 + ... + 75803.

It is an arithmetic number, because the mean of its divisors is an integer number (39025800).

Almost surely, 2^770032221 is an apocalyptic number.

It is an amenable number.

770032221 is a deficient number, since it is larger than the sum of its proper divisors (478793379).

770032221 is a wasteful number, since it uses less digits than its factorization.

770032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11173.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 770032221 is about 27749.4544270694. The cubic root of 770032221 is about 916.5784299567.

Adding to 770032221 its reverse (122230077), we get a palindrome (892262298).

The spelling of 770032221 in words is "seven hundred seventy million, thirty-two thousand, two hundred twenty-one".