424511661 has 32 divisors (see below), whose sum is σ = 695439360. Its totient is φ = 224911296.

The previous prime is 424511653. The next prime is 424511669. The reversal of 424511661 is 166115424.

It is an interprime number because it is at equal distance from previous prime (424511653) and next prime (424511669).

It is not a de Polignac number, because 424511661 - 2³ = 424511653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424511669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7435 + ... + 30071.

It is an arithmetic number, because the mean of its divisors is an integer number (21732480).

Almost surely, 2^424511661 is an apocalyptic number.

It is an amenable number.

424511661 is a deficient number, since it is larger than the sum of its proper divisors (270927699).

424511661 is a wasteful number, since it uses less digits than its factorization.

424511661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22713.

The product of its digits is 5760, while the sum is 30.

The square root of 424511661 is about 20603.6807633976. The cubic root of 424511661 is about 751.5592219672.

The spelling of 424511661 in words is "four hundred twenty-four million, five hundred eleven thousand, six hundred sixty-one".