699689760 has 288 divisors, whose sum is σ = 2770298496. Its totient is φ = 145305600.

The previous prime is 699689737. The next prime is 699689761. The reversal of 699689760 is 67986996.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 699689694 and 699689703.

It is not an unprimeable number, because it can be changed into a prime (699689761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 405700 + ... + 407420.

It is an arithmetic number, because the mean of its divisors is an integer number (9619092).

Almost surely, 2^699689760 is an apocalyptic number.

699689760 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 699689760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1385149248).

699689760 is an abundant number, since it is smaller than the sum of its proper divisors (2070608736).

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

699689760 is a wasteful number, since it uses less digits than its factorization.

699689760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 60.

The square root of 699689760 is about 26451.6494759779. The cubic root of 699689760 is about 887.7728093413.

The spelling of 699689760 in words is "six hundred ninety-nine million, six hundred eighty-nine thousand, seven hundred sixty".