424666731 has 4 divisors (see below), whose sum is σ = 566222312. Its totient is φ = 283111152.

The previous prime is 424666729. The next prime is 424666751. The reversal of 424666731 is 137666424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 424666731 - 2¹ = 424666729 is a prime.

It is a super-2 number, since 2×424666731² = 360683664836452722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 424666731.

It is not an unprimeable number, because it can be changed into a prime (424666751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70777786 + ... + 70777791.

It is an arithmetic number, because the mean of its divisors is an integer number (141555578).

Almost surely, 2^424666731 is an apocalyptic number.

424666731 is a deficient number, since it is larger than the sum of its proper divisors (141555581).

424666731 is a wasteful number, since it uses less digits than its factorization.

424666731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141555580.

The product of its digits is 145152, while the sum is 39.

The square root of 424666731 is about 20607.4435823564. The cubic root of 424666731 is about 751.6507232626.

The spelling of 424666731 in words is "four hundred twenty-four million, six hundred sixty-six thousand, seven hundred thirty-one".