63402560 has 56 divisors (see below), whose sum is σ = 162601656. Its totient is φ = 23408640.

The previous prime is 63402557. The next prime is 63402583. The reversal of 63402560 is 6520436.

It can be written as a sum of positive squares in 4 ways, for example, as 4910656 + 58491904 = 2216^2 + 7648^2 .

It is a super-2 number, since 2×63402560² = 8039769229107200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 3461 + ... + 11780.

It is an arithmetic number, because the mean of its divisors is an integer number (2903601).

Almost surely, 2^63402560 is an apocalyptic number.

It is an amenable number.

63402560 is an abundant number, since it is smaller than the sum of its proper divisors (99199096).

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

63402560 is a wasteful number, since it uses less digits than its factorization.

63402560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15271 (or 15261 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 63402560 is about 7962.5724486500. The cubic root of 63402560 is about 398.7514401339.

Adding to 63402560 its reverse (6520436), we get a palindrome (69922996).

The spelling of 63402560 in words is "sixty-three million, four hundred two thousand, five hundred sixty".