424578861 has 64 divisors (see below), whose sum is σ = 745113600. Its totient is φ = 233912448.

The previous prime is 424578857. The next prime is 424578881. The reversal of 424578861 is 168875424.

It is not a de Polignac number, because 424578861 - 2² = 424578857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424578881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 723010 + ... + 723596.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^424578861 is an apocalyptic number.

It is an amenable number.

424578861 is a deficient number, since it is larger than the sum of its proper divisors (320534739).

424578861 is a wasteful number, since it uses less digits than its factorization.

424578861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 729 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 424578861 is about 20605.3114754424. The cubic root of 424578861 is about 751.5988770342.

The spelling of 424578861 in words is "four hundred twenty-four million, five hundred seventy-eight thousand, eight hundred sixty-one".