355579640 has 32 divisors (see below), whose sum is σ = 861598080. Its totient is φ = 131290752.

The previous prime is 355579639. The next prime is 355579649. The reversal of 355579640 is 46975553.

It is a junction number, because it is equal to n+sod(n) for n = 355579591 and 355579600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355579649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341384 + ... + 342423.

It is an arithmetic number, because the mean of its divisors is an integer number (26924940).

Almost surely, 2^355579640 is an apocalyptic number.

It is an amenable number.

355579640 is an abundant number, since it is smaller than the sum of its proper divisors (506018440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

355579640 is a wasteful number, since it uses less digits than its factorization.

355579640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683831 (or 683827 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 44.

The square root of 355579640 is about 18856.8194561013. The cubic root of 355579640 is about 708.4550417239.

The spelling of 355579640 in words is "three hundred fifty-five million, five hundred seventy-nine thousand, six hundred forty".