719961 has 8 divisors (see below), whose sum is σ = 1047264. Its totient is φ = 436320.

The previous prime is 719959. The next prime is 719981. The reversal of 719961 is 169917.

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

It is not a de Polignac number, because 719961 - 2¹ = 719959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 21817 = 719961 / (7 + 1 + 9 + 9 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (719911) 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, 10876 + ... + 10941.

It is an arithmetic number, because the mean of its divisors is an integer number (130908).

2⁷¹⁹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

719961 is a deficient number, since it is larger than the sum of its proper divisors (327303).

719961 is a wasteful number, since it uses less digits than its factorization.

719961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21831.

The product of its digits is 3402, while the sum is 33.

The square root of 719961 is about 848.5051561423. The cubic root of 719961 is about 89.6264766169.

It can be divided in two parts, 7199 and 61, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 719961 in words is "seven hundred nineteen thousand, nine hundred sixty-one".