706899840 has 128 divisors (see below), whose sum is σ = 2260703520. Its totient is φ = 187883520.

The previous prime is 706899839. The next prime is 706899841. The reversal of 706899840 is 48998607.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (706899839) and next prime (706899841).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706899841) 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, 1069110 + ... + 1069770.

Almost surely, 2^706899840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 706899840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130351760).

706899840 is an abundant number, since it is smaller than the sum of its proper divisors (1553803680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

706899840 is a wasteful number, since it uses less digits than its factorization.

706899840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240 (or 1228 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 706899840 is about 26587.5880816595. The cubic root of 706899840 is about 890.8117998083.

The spelling of 706899840 in words is "seven hundred six million, eight hundred ninety-nine thousand, eight hundred forty".