63542669 has 4 divisors (see below), whose sum is σ = 66887040. Its totient is φ = 60198300.

The previous prime is 63542659. The next prime is 63542681. The reversal of 63542669 is 96624536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63542669 is a prime.

It is a super-2 number, since 2×63542669² = 8075341567287122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63542639) 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, 1672157 + ... + 1672194.

It is an arithmetic number, because the mean of its divisors is an integer number (16721760).

Almost surely, 2^63542669 is an apocalyptic number.

It is an amenable number.

63542669 is a deficient number, since it is larger than the sum of its proper divisors (3344371).

63542669 is a wasteful number, since it uses less digits than its factorization.

63542669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344370.

The product of its digits is 233280, while the sum is 41.

The square root of 63542669 is about 7971.3655668273. The cubic root of 63542669 is about 399.0449485902.

The spelling of 63542669 in words is "sixty-three million, five hundred forty-two thousand, six hundred sixty-nine".