61878206 has 8 divisors (see below), whose sum is σ = 99957144. Its totient is φ = 28559160.

The previous prime is 61878203. The next prime is 61878209. The reversal of 61878206 is 60287816.

It is an interprime number because it is at equal distance from previous prime (61878203) and next prime (61878209).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61878206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61878203) 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, 1189940 + ... + 1189991.

It is an arithmetic number, because the mean of its divisors is an integer number (12494643).

Almost surely, 2^61878206 is an apocalyptic number.

61878206 is a deficient number, since it is larger than the sum of its proper divisors (38078938).

61878206 is a wasteful number, since it uses less digits than its factorization.

61878206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379946.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 61878206 is about 7866.2701453739. The cubic root of 61878206 is about 395.5298257834.

The spelling of 61878206 in words is "sixty-one million, eight hundred seventy-eight thousand, two hundred six".