663740546 has 16 divisors (see below), whose sum is σ = 1141896960. Its totient is φ = 283446240.

The previous prime is 663740531. The next prime is 663740563. The reversal of 663740546 is 645047366.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80426 + ... + 88293.

It is an arithmetic number, because the mean of its divisors is an integer number (71368560).

Almost surely, 2^663740546 is an apocalyptic number.

663740546 is a deficient number, since it is larger than the sum of its proper divisors (478156414).

663740546 is a wasteful number, since it uses less digits than its factorization.

663740546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169009.

The product of its (nonzero) digits is 362880, while the sum is 41.

The square root of 663740546 is about 25763.1625776029. The cubic root of 663740546 is about 872.3004892985.

The spelling of 663740546 in words is "six hundred sixty-three million, seven hundred forty thousand, five hundred forty-six".