3690745856 has 208 divisors, whose sum is σ = 8964230400. Its totient is φ = 1517322240.

The previous prime is 3690745787. The next prime is 3690745867. The reversal of 3690745856 is 6585470963.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 3690745798 and 3690745807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51982301 + ... + 51982371.

Almost surely, 2^3690745856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3690745856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4482115200).

3690745856 is an abundant number, since it is smaller than the sum of its proper divisors (5273484544).

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

3690745856 is an frugal number, since it uses more digits than its factorization.

3690745856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 53.

The square root of 3690745856 is about 60751.5090841372. The cubic root of 3690745856 is about 1545.3898194907.

The spelling of 3690745856 in words is "three billion, six hundred ninety million, seven hundred forty-five thousand, eight hundred fifty-six".