694473937920 has 1056 divisors, whose sum is σ = 2976807794688. Its totient is φ = 151791501312.

The previous prime is 694473937919. The next prime is 694473937979. The reversal of 694473937920 is 29739374496.

694473937920 is a `hidden beast` number, since 6 + 9 + 4 + 473 + 93 + 79 + 2 + 0 = 666.

It is a super-2 number, since 2×694473937920² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 200308027 + ... + 200311493.

Almost surely, 2^694473937920 is an apocalyptic number.

694473937920 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 694473937920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488403897344).

694473937920 is an abundant number, since it is smaller than the sum of its proper divisors (2282333856768).

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

694473937920 is a wasteful number, since it uses less digits than its factorization.

694473937920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537 (or 3507 counting only the distinct ones).

The product of its (nonzero) digits is 61725888, while the sum is 63.

The spelling of 694473937920 in words is "six hundred ninety-four billion, four hundred seventy-three million, nine hundred thirty-seven thousand, nine hundred twenty".