694578240 has 280 divisors, whose sum is σ = 2501993472. Its totient is φ = 182891520.

The previous prime is 694578239. The next prime is 694578259. The reversal of 694578240 is 42875496.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3291735 + ... + 3291945.

Almost surely, 2^694578240 is an apocalyptic number.

694578240 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 694578240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250996736).

694578240 is an abundant number, since it is smaller than the sum of its proper divisors (1807415232).

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

694578240 is a wasteful number, since it uses less digits than its factorization.

694578240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 694578240 is about 26354.8523046516. The cubic root of 694578240 is about 885.6056755976.

The spelling of 694578240 in words is "six hundred ninety-four million, five hundred seventy-eight thousand, two hundred forty".