772045 has 4 divisors (see below), whose sum is σ = 926460. Its totient is φ = 617632.

The previous prime is 772019. The next prime is 772061. The reversal of 772045 is 540277.

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 233289 + 538756 = 483^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 772045 - 2⁷ = 771917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77200 + ... + 77209.

It is an arithmetic number, because the mean of its divisors is an integer number (231615).

2⁷⁷²⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

772045 is a deficient number, since it is larger than the sum of its proper divisors (154415).

772045 is a wasteful number, since it uses less digits than its factorization.

772045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154414.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 772045 is about 878.6609129807. The cubic root of 772045 is about 91.7376346662.

The spelling of 772045 in words is "seven hundred seventy-two thousand, forty-five".