605640531 has 32 divisors (see below), whose sum is σ = 871492608. Its totient is φ = 373127040.

The previous prime is 605640499. The next prime is 605640533. The reversal of 605640531 is 135046506.

It is not a de Polignac number, because 605640531 - 2⁵ = 605640499 is a prime.

It is a super-2 number, since 2×605640531² = 733600905579923922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (605640533) 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, 400066 + ... + 401576.

It is an arithmetic number, because the mean of its divisors is an integer number (27234144).

Almost surely, 2^605640531 is an apocalyptic number.

605640531 is a deficient number, since it is larger than the sum of its proper divisors (265852077).

605640531 is a wasteful number, since it uses less digits than its factorization.

605640531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 605640531 is about 24609.7649521486. The cubic root of 605640531 is about 846.0674305915.

The spelling of 605640531 in words is "six hundred five million, six hundred forty thousand, five hundred thirty-one".