61878303 has 16 divisors (see below), whose sum is σ = 95658240. Its totient is φ = 39458232.

The previous prime is 61878287. The next prime is 61878329. The reversal of 61878303 is 30387816.

61878303 is a `hidden beast` number, since 618 + 7 + 8 + 30 + 3 = 666.

It is not a de Polignac number, because 61878303 - 2⁴ = 61878287 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61878353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49201 + ... + 50442.

It is an arithmetic number, because the mean of its divisors is an integer number (5978640).

Almost surely, 2^61878303 is an apocalyptic number.

61878303 is a deficient number, since it is larger than the sum of its proper divisors (33779937).

61878303 is a wasteful number, since it uses less digits than its factorization.

61878303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99675 (or 99669 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 61878303 is about 7866.2763109365. The cubic root of 61878303 is about 395.5300324602.

The spelling of 61878303 in words is "sixty-one million, eight hundred seventy-eight thousand, three hundred three".