3551966964 has 216 divisors, whose sum is σ = 11526540480. Its totient is φ = 936479232.

The previous prime is 3551966963. The next prime is 3551966993. The reversal of 3551966964 is 4696691553.

3551966964 is a `hidden beast` number, since 3 + 5 + 519 + 6 + 69 + 64 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 3551966964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551966963) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1148332 + ... + 1151420.

Almost surely, 2^3551966964 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 3551966964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5763270240).

3551966964 is an abundant number, since it is smaller than the sum of its proper divisors (7974573516).

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

3551966964 is a wasteful number, since it uses less digits than its factorization.

3551966964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141 (or 3114 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 54.

The square root of 3551966964 is about 59598.3805484679. The cubic root of 3551966964 is about 1525.7719949045.

The spelling of 3551966964 in words is "three billion, five hundred fifty-one million, nine hundred sixty-six thousand, nine hundred sixty-four".