770960921 has 4 divisors (see below), whose sum is σ = 780720000. Its totient is φ = 761201844.

The previous prime is 770960867. The next prime is 770960923. The reversal of 770960921 is 129069077.

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, and also an emirpimes, since its reverse is a distinct semiprime: 129069077 = 23 ⋅5611699.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-770960921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770960923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4879421 + ... + 4879578.

It is an arithmetic number, because the mean of its divisors is an integer number (195180000).

Almost surely, 2^770960921 is an apocalyptic number.

It is an amenable number.

770960921 is a deficient number, since it is larger than the sum of its proper divisors (9759079).

770960921 is an equidigital number, since it uses as much as digits as its factorization.

770960921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9759078.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 770960921 is about 27766.1830470088. The cubic root of 770960921 is about 916.9467627726.

The spelling of 770960921 in words is "seven hundred seventy million, nine hundred sixty thousand, nine hundred twenty-one".