770642 has 4 divisors (see below), whose sum is σ = 1155966. Its totient is φ = 385320.

The previous prime is 770641. The next prime is 770647. The reversal of 770642 is 246077.

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

It can be written as a sum of positive squares in only one way, i.e., 737881 + 32761 = 859^2 + 181^2 .

It is not an unprimeable number, because it can be changed into a prime (770641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192659 + ... + 192662.

2⁷⁷⁰⁶⁴² is an apocalyptic number.

770642 is a deficient number, since it is larger than the sum of its proper divisors (385324).

770642 is a wasteful number, since it uses less digits than its factorization.

770642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385323.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 770642 is about 877.8621759707. The cubic root of 770642 is about 91.6820308498.

It can be divided in two parts, 7 and 70642, that multiplied together give a palindrome (494494).

The spelling of 770642 in words is "seven hundred seventy thousand, six hundred forty-two".