424339665 has 16 divisors (see below), whose sum is σ = 688507776. Its totient is φ = 223126400.

The previous prime is 424339661. The next prime is 424339667. The reversal of 424339665 is 566933424.

It is not a de Polignac number, because 424339665 - 2² = 424339661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424339661) 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, 198156 + ... + 200285.

It is an arithmetic number, because the mean of its divisors is an integer number (43031736).

Almost surely, 2^424339665 is an apocalyptic number.

It is an amenable number.

424339665 is a deficient number, since it is larger than the sum of its proper divisors (264168111).

424339665 is a wasteful number, since it uses less digits than its factorization.

424339665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398520.

The product of its digits is 466560, while the sum is 42.

The square root of 424339665 is about 20599.5064261258. The cubic root of 424339665 is about 751.4577071731.

The spelling of 424339665 in words is "four hundred twenty-four million, three hundred thirty-nine thousand, six hundred sixty-five".