770654641 has 4 divisors (see below), whose sum is σ = 771176484. Its totient is φ = 770132800.

The previous prime is 770654639. The next prime is 770654653. The reversal of 770654641 is 146456077.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 300675600 + 469979041 = 17340^2 + 21679^2 .

It is a cyclic number.

It is not a de Polignac number, because 770654641 - 2¹ = 770654639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 770654594 and 770654603.

It is not an unprimeable number, because it can be changed into a prime (770654681) 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, 258700 + ... + 261661.

It is an arithmetic number, because the mean of its divisors is an integer number (192794121).

Almost surely, 2^770654641 is an apocalyptic number.

It is an amenable number.

770654641 is a deficient number, since it is larger than the sum of its proper divisors (521843).

770654641 is a wasteful number, since it uses less digits than its factorization.

770654641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521842.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 770654641 is about 27760.6671569687. The cubic root of 770654641 is about 916.8253214020.

The spelling of 770654641 in words is "seven hundred seventy million, six hundred fifty-four thousand, six hundred forty-one".