698720264 has 64 divisors (see below), whose sum is σ = 1518652800. Its totient is φ = 297856000.

The previous prime is 698720249. The next prime is 698720293. The reversal of 698720264 is 462027896.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536414 + ... + 537714.

It is an arithmetic number, because the mean of its divisors is an integer number (23728950).

Almost surely, 2^698720264 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 698720264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759326400).

698720264 is an abundant number, since it is smaller than the sum of its proper divisors (819932536).

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

698720264 is a wasteful number, since it uses less digits than its factorization.

698720264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 698720264 is about 26433.3173097892. The cubic root of 698720264 is about 887.3625846625.

The spelling of 698720264 in words is "six hundred ninety-eight million, seven hundred twenty thousand, two hundred sixty-four".