63778490 has 16 divisors (see below), whose sum is σ = 115023240. Its totient is φ = 25462080.

The previous prime is 63778433. The next prime is 63778513. The reversal of 63778490 is 9487736.

It can be written as a sum of positive squares in 4 ways, for example, as 29474041 + 34304449 = 5429^2 + 5857^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485 + ... + 11304.

Almost surely, 2^63778490 is an apocalyptic number.

63778490 is a deficient number, since it is larger than the sum of its proper divisors (51244750).

63778490 is a wasteful number, since it uses less digits than its factorization.

63778490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12337.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 63778490 is about 7986.1436250546. The cubic root of 63778490 is about 399.5379873997.

The spelling of 63778490 in words is "sixty-three million, seven hundred seventy-eight thousand, four hundred ninety".