709961 has 6 divisors (see below), whose sum is σ = 825930. Its totient is φ = 608496.

The previous prime is 709957. The next prime is 709963. The reversal of 709961 is 169907.

709961 = T₆₈ + T₆₉ + ... + T₁₆₅.

709961 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 only one way, i.e., 490000 + 219961 = 700^2 + 469^2 .

It is not a de Polignac number, because 709961 - 2² = 709957 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 709961.

It is not an unprimeable number, because it can be changed into a prime (709963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7196 + ... + 7293.

It is an arithmetic number, because the mean of its divisors is an integer number (137655).

2⁷⁰⁹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

709961 is a deficient number, since it is larger than the sum of its proper divisors (115969).

709961 is a wasteful number, since it uses less digits than its factorization.

709961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14503 (or 14496 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 709961 is about 842.5918347575. The cubic root of 709961 is about 89.2095805699.

The spelling of 709961 in words is "seven hundred nine thousand, nine hundred sixty-one".