3690516780 has 144 divisors (see below), whose sum is σ = 11475819264. Its totient is φ = 959713920.

The previous prime is 3690516779. The next prime is 3690516787. The reversal of 3690516780 is 876150963.

It is a happy number.

3690516780 is a `hidden beast` number, since 3 + 69 + 0 + 516 + 78 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (3690516787) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1240695 + ... + 1243665.

Almost surely, 2^3690516780 is an apocalyptic number.

3690516780 is a gapful number since it is divisible by the number (30) 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 3690516780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5737909632).

3690516780 is an abundant number, since it is smaller than the sum of its proper divisors (7785302484).

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

3690516780 is a wasteful number, since it uses less digits than its factorization.

3690516780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156 (or 3151 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 3690516780 is about 60749.6237025383. The cubic root of 3690516780 is about 1545.3578459135.

The spelling of 3690516780 in words is "three billion, six hundred ninety million, five hundred sixteen thousand, seven hundred eighty".