63957539 has 4 divisors (see below), whose sum is σ = 64026024. Its totient is φ = 63889056.

The previous prime is 63957533. The next prime is 63957547. The reversal of 63957539 is 93575936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63957539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63957493 and 63957502.

It is not an unprimeable number, because it can be changed into a prime (63957533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32822 + ... + 34715.

It is an arithmetic number, because the mean of its divisors is an integer number (16006506).

Almost surely, 2^63957539 is an apocalyptic number.

63957539 is a deficient number, since it is larger than the sum of its proper divisors (68485).

63957539 is an equidigital number, since it uses as much as digits as its factorization.

63957539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68484.

The product of its digits is 765450, while the sum is 47.

The square root of 63957539 is about 7997.3457471839. The cubic root of 63957539 is about 399.9115200130.

The spelling of 63957539 in words is "sixty-three million, nine hundred fifty-seven thousand, five hundred thirty-nine".