3506776640 has 28 divisors (see below), whose sum is σ = 8350512636. Its totient is φ = 1402710528.

The previous prime is 3506776633. The next prime is 3506776681. The reversal of 3506776640 is 466776053.

It can be written as a sum of positive squares in 2 ways, for example, as 2507205184 + 999571456 = 50072^2 + 31616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3506776591 and 3506776600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5479019 + ... + 5479658.

Almost surely, 2^3506776640 is an apocalyptic number.

It is an amenable number.

3506776640 is an abundant number, since it is smaller than the sum of its proper divisors (4843735996).

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

3506776640 is a wasteful number, since it uses less digits than its factorization.

3506776640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10958694 (or 10958684 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 44.

The square root of 3506776640 is about 59218.0431963097. The cubic root of 3506776640 is about 1519.2737527815.

The spelling of 3506776640 in words is "three billion, five hundred six million, seven hundred seventy-six thousand, six hundred forty".