694241280 has 384 divisors, whose sum is σ = 2578867200. Its totient is φ = 179159040.

The previous prime is 694241279. The next prime is 694241281. The reversal of 694241280 is 82142496.

It is an interprime number because it is at equal distance from previous prime (694241279) and next prime (694241281).

It is a tau number, because it is divible by the number of its divisors (384).

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

It is not an unprimeable number, because it can be changed into a prime (694241281) 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, 22394865 + ... + 22394895.

It is an arithmetic number, because the mean of its divisors is an integer number (6715800).

Almost surely, 2^694241280 is an apocalyptic number.

694241280 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 694241280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289433600).

694241280 is an abundant number, since it is smaller than the sum of its proper divisors (1884625920).

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

694241280 is an frugal number, since it uses more digits than its factorization.

694241280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 694241280 is about 26348.4587784561. The cubic root of 694241280 is about 885.4624414542.

The spelling of 694241280 in words is "six hundred ninety-four million, two hundred forty-one thousand, two hundred eighty".