663769707 has 8 divisors (see below), whose sum is σ = 887578176. Its totient is φ = 441237192.

The previous prime is 663769703. The next prime is 663769747. The reversal of 663769707 is 707967366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 663769707 - 2² = 663769703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663769707.

It is not an unprimeable number, because it can be changed into a prime (663769703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317773 + ... + 319854.

It is an arithmetic number, because the mean of its divisors is an integer number (110947272).

Almost surely, 2^663769707 is an apocalyptic number.

663769707 is a deficient number, since it is larger than the sum of its proper divisors (223808469).

663769707 is a wasteful number, since it uses less digits than its factorization.

663769707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637977.

The product of its (nonzero) digits is 2000376, while the sum is 51.

The square root of 663769707 is about 25763.7285151043. The cubic root of 663769707 is about 872.3132637589.

The spelling of 663769707 in words is "six hundred sixty-three million, seven hundred sixty-nine thousand, seven hundred seven".