698640936 has 64 divisors (see below), whose sum is σ = 2001648000. Its totient is φ = 199058688.

The previous prime is 698640931. The next prime is 698640961. The reversal of 698640936 is 639046896.

It is not an unprimeable number, because it can be changed into a prime (698640931) 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, 57090 + ... + 68238.

It is an arithmetic number, because the mean of its divisors is an integer number (31275750).

Almost surely, 2^698640936 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 698640936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000824000).

698640936 is an abundant number, since it is smaller than the sum of its proper divisors (1303007064).

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

698640936 is a wasteful number, since it uses less digits than its factorization.

698640936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11538 (or 11534 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 51.

The square root of 698640936 is about 26431.8167366528. The cubic root of 698640936 is about 887.3290016647.

The spelling of 698640936 in words is "six hundred ninety-eight million, six hundred forty thousand, nine hundred thirty-six".