694302840 has 640 divisors, whose sum is σ = 3061048320. Its totient is φ = 137998080.

The previous prime is 694302839. The next prime is 694302853. The reversal of 694302840 is 48203496.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 694302795 and 694302804.

It is a congruent number.

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 30187069 + ... + 30187091.

It is an arithmetic number, because the mean of its divisors is an integer number (4782888).

Almost surely, 2^694302840 is an apocalyptic number.

694302840 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 694302840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530524160).

694302840 is an abundant number, since it is smaller than the sum of its proper divisors (2366745480).

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

694302840 is a wasteful number, since it uses less digits than its factorization.

694302840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 694302840 is about 26349.6269423307. The cubic root of 694302840 is about 885.4886126900.

The spelling of 694302840 in words is "six hundred ninety-four million, three hundred two thousand, eight hundred forty".