770638 has 16 divisors (see below), whose sum is σ = 1316736. Its totient is φ = 334840.

The previous prime is 770611. The next prime is 770639. The reversal of 770638 is 836077.

770638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 1267.

It is an arithmetic number, because the mean of its divisors is an integer number (82296).

2⁷⁷⁰⁶³⁸ is an apocalyptic number.

770638 is a deficient number, since it is larger than the sum of its proper divisors (546098).

770638 is a wasteful number, since it uses less digits than its factorization.

770638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 770638 is about 877.8598977058. The cubic root of 770638 is about 91.6818722251.

It can be divided in two parts, 7706 and 38, that added together give a square (7744 = 88²).

The spelling of 770638 in words is "seven hundred seventy thousand, six hundred thirty-eight".