63390547 has 4 divisors (see below), whose sum is σ = 69153336. Its totient is φ = 57627760.

The previous prime is 63390541. The next prime is 63390559. The reversal of 63390547 is 74509336.

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-63390547 is a prime.

It is a super-2 number, since 2×63390547² = 8036722897918418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63390541) 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, 2881378 + ... + 2881399.

It is an arithmetic number, because the mean of its divisors is an integer number (17288334).

Almost surely, 2^63390547 is an apocalyptic number.

63390547 is a deficient number, since it is larger than the sum of its proper divisors (5762789).

63390547 is a wasteful number, since it uses less digits than its factorization.

63390547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5762788.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 63390547 is about 7961.8180712699. The cubic root of 63390547 is about 398.7262544862.

The spelling of 63390547 in words is "sixty-three million, three hundred ninety thousand, five hundred forty-seven".