440770666 has 32 divisors (see below), whose sum is σ = 796324608. Its totient is φ = 178886400.

The previous prime is 440770663. The next prime is 440770697. The reversal of 440770666 is 666077044.

It is not an unprimeable number, because it can be changed into a prime (440770663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25746 + ... + 39298.

It is an arithmetic number, because the mean of its divisors is an integer number (24885144).

Almost surely, 2^440770666 is an apocalyptic number.

440770666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

440770666 is a deficient number, since it is larger than the sum of its proper divisors (355553942).

440770666 is a wasteful number, since it uses less digits than its factorization.

440770666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13686.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 440770666 is about 20994.5389565954. The cubic root of 440770666 is about 761.0342946839.

The spelling of 440770666 in words is "four hundred forty million, seven hundred seventy thousand, six hundred sixty-six".