332640401 has 2 divisors, whose sum is σ = 332640402. Its totient is φ = 332640400.

The previous prime is 332640367. The next prime is 332640409. The reversal of 332640401 is 104046233.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205492225 + 127148176 = 14335^2 + 11276^2 .

It is a cyclic number.

It is not a de Polignac number, because 332640401 - 2⁶ = 332640337 is a prime.

It is a super-2 number, since 2×332640401² = 221299272754881602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (332640409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166320200 + 166320201.

It is an arithmetic number, because the mean of its divisors is an integer number (166320201).

Almost surely, 2^332640401 is an apocalyptic number.

It is an amenable number.

332640401 is a deficient number, since it is larger than the sum of its proper divisors (1).

332640401 is an equidigital number, since it uses as much as digits as its factorization.

332640401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 332640401 is about 18238.4319775577. The cubic root of 332640401 is about 692.8804885989.

Adding to 332640401 its reverse (104046233), we get a palindrome (436686634).

The spelling of 332640401 in words is "three hundred thirty-two million, six hundred forty thousand, four hundred one".