61378211 has 8 divisors (see below), whose sum is σ = 65502720. Its totient is φ = 57310848.

The previous prime is 61378201. The next prime is 61378217. The reversal of 61378211 is 11287316.

61378211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61378211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61378217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12056 + ... + 16373.

It is an arithmetic number, because the mean of its divisors is an integer number (8187840).

Almost surely, 2^61378211 is an apocalyptic number.

61378211 is a deficient number, since it is larger than the sum of its proper divisors (4124509).

61378211 is a wasteful number, since it uses less digits than its factorization.

61378211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28573.

The product of its digits is 2016, while the sum is 29.

The square root of 61378211 is about 7834.4247395709. The cubic root of 61378211 is about 394.4616090718.

The spelling of 61378211 in words is "sixty-one million, three hundred seventy-eight thousand, two hundred eleven".