699085640 has 64 divisors (see below), whose sum is σ = 1733037120. Its totient is φ = 251680000.

The previous prime is 699085633. The next prime is 699085643. The reversal of 699085640 is 46580996.

It is not an unprimeable number, because it can be changed into a prime (699085643) 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, 36575 + ... + 52305.

It is an arithmetic number, because the mean of its divisors is an integer number (27078705).

Almost surely, 2^699085640 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 699085640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866518560).

699085640 is an abundant number, since it is smaller than the sum of its proper divisors (1033951480).

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

699085640 is a wasteful number, since it uses less digits than its factorization.

699085640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15854 (or 15850 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 699085640 is about 26440.2276843449. The cubic root of 699085640 is about 887.5172314316.

The spelling of 699085640 in words is "six hundred ninety-nine million, eighty-five thousand, six hundred forty".