694916820 has 288 divisors, whose sum is σ = 2496469248. Its totient is φ = 160745472.

The previous prime is 694916791. The next prime is 694916861. The reversal of 694916820 is 28619496.

It is a happy number.

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1073737 + ... + 1074383.

It is an arithmetic number, because the mean of its divisors is an integer number (8668296).

Almost surely, 2^694916820 is an apocalyptic number.

694916820 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 694916820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1248234624).

694916820 is an abundant number, since it is smaller than the sum of its proper divisors (1801552428).

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

694916820 is a wasteful number, since it uses less digits than its factorization.

694916820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 694916820 is about 26361.2750071009. The cubic root of 694916820 is about 885.7495517151.

The spelling of 694916820 in words is "six hundred ninety-four million, nine hundred sixteen thousand, eight hundred twenty".