3646220774 has 32 divisors (see below), whose sum is σ = 6681540096. Its totient is φ = 1458262080.

The previous prime is 3646220731. The next prime is 3646220789. The reversal of 3646220774 is 4770226463.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124892 + ... + 151295.

It is an arithmetic number, because the mean of its divisors is an integer number (208798128).

Almost surely, 2^3646220774 is an apocalyptic number.

3646220774 is a deficient number, since it is larger than the sum of its proper divisors (3035319322).

3646220774 is a wasteful number, since it uses less digits than its factorization.

3646220774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276260.

The product of its (nonzero) digits is 338688, while the sum is 41.

The square root of 3646220774 is about 60383.9446707484. The cubic root of 3646220774 is about 1539.1501430521.

The spelling of 3646220774 in words is "three billion, six hundred forty-six million, two hundred twenty thousand, seven hundred seventy-four".