698059440 has 480 divisors, whose sum is σ = 2763948096. Its totient is φ = 156303360.

The previous prime is 698059393. The next prime is 698059451. The reversal of 698059440 is 44950896.

It is a happy number.

It is a super-2 number, since 2×698059440² = 974573963546227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6523867 + ... + 6523973.

Almost surely, 2^698059440 is an apocalyptic number.

698059440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698059440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381974048).

698059440 is an abundant number, since it is smaller than the sum of its proper divisors (2065888656).

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

698059440 is a wasteful number, since it uses less digits than its factorization.

698059440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 698059440 is about 26420.8145218879. The cubic root of 698059440 is about 887.0827514291.

The spelling of 698059440 in words is "six hundred ninety-eight million, fifty-nine thousand, four hundred forty".