3661477372 has 72 divisors (see below), whose sum is σ = 7641239424. Its totient is φ = 1530210528.

The previous prime is 3661477367. The next prime is 3661477397. The reversal of 3661477372 is 2737741663.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1351243 + ... + 1353949.

Almost surely, 2^3661477372 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 3661477372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3820619712).

3661477372 is an abundant number, since it is smaller than the sum of its proper divisors (3979762052).

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

3661477372 is a wasteful number, since it uses less digits than its factorization.

3661477372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895 (or 2886 counting only the distinct ones).

The product of its digits is 889056, while the sum is 46.

The square root of 3661477372 is about 60510.1427200432. The cubic root of 3661477372 is about 1541.2938712934.

The spelling of 3661477372 in words is "three billion, six hundred sixty-one million, four hundred seventy-seven thousand, three hundred seventy-two".