63380385 has 12 divisors (see below), whose sum is σ = 109859412. Its totient is φ = 33802848.

The previous prime is 63380381. The next prime is 63380389. The reversal of 63380385 is 58308336.

It is an interprime number because it is at equal distance from previous prime (63380381) and next prime (63380389).

It can be written as a sum of positive squares in 2 ways, for example, as 28132416 + 35247969 = 5304^2 + 5937^2 .

It is not a de Polignac number, because 63380385 - 2² = 63380381 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63380381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 704182 + ... + 704271.

It is an arithmetic number, because the mean of its divisors is an integer number (9154951).

Almost surely, 2^63380385 is an apocalyptic number.

It is an amenable number.

63380385 is a deficient number, since it is larger than the sum of its proper divisors (46479027).

63380385 is a wasteful number, since it uses less digits than its factorization.

63380385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408464 (or 1408461 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 63380385 is about 7961.1798748678. The cubic root of 63380385 is about 398.7049470362.

It can be divided in two parts, 633 and 80385, that added together give a palindrome (81018).

The spelling of 63380385 in words is "sixty-three million, three hundred eighty thousand, three hundred eighty-five".