706990 has 24 divisors (see below), whose sum is σ = 1361880. Its totient is φ = 263520.

The previous prime is 706987. The next prime is 706999. The reversal of 706990 is 99607.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11560 + ... + 11620.

It is an arithmetic number, because the mean of its divisors is an integer number (56745).

2⁷⁰⁶⁹⁹⁰ is an apocalyptic number.

706990 is a deficient number, since it is larger than the sum of its proper divisors (654890).

706990 is a wasteful number, since it uses less digits than its factorization.

706990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 706990 is about 840.8269738775. The cubic root of 706990 is about 89.0849670415.

The spelling of 706990 in words is "seven hundred six thousand, nine hundred ninety".