63542780 has 24 divisors (see below), whose sum is σ = 152503008. Its totient is φ = 21786048.

The previous prime is 63542771. The next prime is 63542789. The reversal of 63542780 is 8724536.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63542771) and next prime (63542789).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 63542780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63542789) 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, 226799 + ... + 227078.

It is an arithmetic number, because the mean of its divisors is an integer number (6354292).

Almost surely, 2^63542780 is an apocalyptic number.

It is an amenable number.

63542780 is an abundant number, since it is smaller than the sum of its proper divisors (88960228).

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

63542780 is a wasteful number, since it uses less digits than its factorization.

63542780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453893 (or 453891 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 63542780 is about 7971.3725292449. The cubic root of 63542780 is about 399.0451809483.

The spelling of 63542780 in words is "sixty-three million, five hundred forty-two thousand, seven hundred eighty".