694194840 has 128 divisors (see below), whose sum is σ = 2335608000. Its totient is φ = 183389184.

The previous prime is 694194797. The next prime is 694194869. The reversal of 694194840 is 48491496.

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, 114772 + ... + 120668.

Almost surely, 2^694194840 is an apocalyptic number.

694194840 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 694194840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167804000).

694194840 is an abundant number, since it is smaller than the sum of its proper divisors (1641413160).

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

694194840 is a wasteful number, since it uses less digits than its factorization.

694194840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026 (or 6016 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 694194840 is about 26347.5774977511. The cubic root of 694194840 is about 885.4426972173.

The spelling of 694194840 in words is "six hundred ninety-four million, one hundred ninety-four thousand, eight hundred forty".