401336680 has 32 divisors (see below), whose sum is σ = 956127240. Its totient is φ = 151091200.

The previous prime is 401336657. The next prime is 401336707. The reversal of 401336680 is 86633104.

It can be written as a sum of positive squares in 4 ways, for example, as 335109636 + 66227044 = 18306^2 + 8138^2 .

It is a super-2 number, since 2×401336680² = 322142261426844800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294421 + ... + 295780.

Almost surely, 2^401336680 is an apocalyptic number.

401336680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401336680 is an abundant number, since it is smaller than the sum of its proper divisors (554790560).

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

401336680 is a wasteful number, since it uses less digits than its factorization.

401336680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590229 (or 590225 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 401336680 is about 20033.3891291514. The cubic root of 401336680 is about 737.6261157493.

Adding to 401336680 its reverse (86633104), we get a palindrome (487969784).

The spelling of 401336680 in words is "four hundred one million, three hundred thirty-six thousand, six hundred eighty".