3645557662 has 4 divisors (see below), whose sum is σ = 5468336496. Its totient is φ = 1822778830.

The previous prime is 3645557659. The next prime is 3645557677. The reversal of 3645557662 is 2667555463.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911389414 + ... + 911389417.

It is an arithmetic number, because the mean of its divisors is an integer number (1367084124).

Almost surely, 2^3645557662 is an apocalyptic number.

3645557662 is a deficient number, since it is larger than the sum of its proper divisors (1822778834).

3645557662 is a wasteful number, since it uses less digits than its factorization.

3645557662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822778833.

The product of its digits is 4536000, while the sum is 49.

The square root of 3645557662 is about 60378.4536237887. The cubic root of 3645557662 is about 1539.0568326658.

The spelling of 3645557662 in words is "three billion, six hundred forty-five million, five hundred fifty-seven thousand, six hundred sixty-two".