772745 has 8 divisors (see below), whose sum is σ = 952584. Its totient is φ = 601344.

The previous prime is 772721. The next prime is 772757. The reversal of 772745 is 547277.

It is a happy number.

772745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 399424 + 373321 = 632^2 + 611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-772745 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1904 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (119073).

2⁷⁷²⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

772745 is a deficient number, since it is larger than the sum of its proper divisors (179839).

772745 is a wasteful number, since it uses less digits than its factorization.

772745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219.

The product of its digits is 13720, while the sum is 32.

The square root of 772745 is about 879.0591561437. The cubic root of 772745 is about 91.7653519392.

The spelling of 772745 in words is "seven hundred seventy-two thousand, seven hundred forty-five".