698293440 has 224 divisors, whose sum is σ = 2653344960. Its totient is φ = 171859968.

The previous prime is 698293423. The next prime is 698293441. The reversal of 698293440 is 44392896.

It is a super-2 number, since 2×698293440² = 975227456694067200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (698293441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109212 + ... + 115428.

It is an arithmetic number, because the mean of its divisors is an integer number (11845290).

Almost surely, 2^698293440 is an apocalyptic number.

698293440 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 698293440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326672480).

698293440 is an abundant number, since it is smaller than the sum of its proper divisors (1955051520).

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

698293440 is a wasteful number, since it uses less digits than its factorization.

698293440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256 (or 6240 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 698293440 is about 26425.2424776008. The cubic root of 698293440 is about 887.1818615058.

The spelling of 698293440 in words is "six hundred ninety-eight million, two hundred ninety-three thousand, four hundred forty".