736989 has 16 divisors (see below), whose sum is σ = 1119744. Its totient is φ = 426800.

The previous prime is 736987. The next prime is 736993. The reversal of 736989 is 989637.

It is a happy number.

It is not a de Polignac number, because 736989 - 2¹ = 736987 is a prime.

It is a super-2 number, since 2×736989² = 1086305572242, which contains 22 as substring.

Its product of digits (81648) is a multiple of the sum of its prime divisors (1008).

It is a self number, because there is not a number n which added to its sum of digits gives 736989.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 736989.

It is not an unprimeable number, because it can be changed into a prime (736987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274 + ... + 1244.

It is an arithmetic number, because the mean of its divisors is an integer number (69984).

2⁷³⁶⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

736989 is a deficient number, since it is larger than the sum of its proper divisors (382755).

736989 is a wasteful number, since it uses less digits than its factorization.

736989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its digits is 81648, while the sum is 42.

The square root of 736989 is about 858.4806346098. The cubic root of 736989 is about 90.3275717274.

The spelling of 736989 in words is "seven hundred thirty-six thousand, nine hundred eighty-nine".