699027840 has 256 divisors, whose sum is σ = 2829888000. Its totient is φ = 159750144.

The previous prime is 699027827. The next prime is 699027859. The reversal of 699027840 is 48720996.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118071 + ... + 123849.

It is an arithmetic number, because the mean of its divisors is an integer number (11054250).

Almost surely, 2^699027840 is an apocalyptic number.

699027840 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 699027840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1414944000).

699027840 is an abundant number, since it is smaller than the sum of its proper divisors (2130860160).

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

699027840 is a wasteful number, since it uses less digits than its factorization.

699027840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814 (or 5796 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 699027840 is about 26439.1346303165. The cubic root of 699027840 is about 887.4927709522.

The spelling of 699027840 in words is "six hundred ninety-nine million, twenty-seven thousand, eight hundred forty".