63540265 has 8 divisors (see below), whose sum is σ = 76576968. Its totient is φ = 50613120.

The previous prime is 63540263. The next prime is 63540277. The reversal of 63540265 is 56204536.

63540265 = 5636² + 5637².

It can be written as a sum of positive squares in 4 ways, for example, as 1272384 + 62267881 = 1128^2 + 7891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63540265 - 2¹ = 63540263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63540263) 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, 26106 + ... + 28435.

It is an arithmetic number, because the mean of its divisors is an integer number (9572121).

Almost surely, 2^63540265 is an apocalyptic number.

63540265 is the 5637-th centered square number.

It is an amenable number.

63540265 is a deficient number, since it is larger than the sum of its proper divisors (13036703).

63540265 is a wasteful number, since it uses less digits than its factorization.

63540265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54779.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 63540265 is about 7971.2147756788. The cubic root of 63540265 is about 399.0399161914.

The spelling of 63540265 in words is "sixty-three million, five hundred forty thousand, two hundred sixty-five".