61378959 has 8 divisors (see below), whose sum is σ = 86652720. Its totient is φ = 38512256.

The previous prime is 61378951. The next prime is 61378969. The reversal of 61378959 is 95987316.

61378959 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 not a de Polignac number, because 61378959 - 2³ = 61378951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61378951) 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, 601704 + ... + 601805.

It is an arithmetic number, because the mean of its divisors is an integer number (10831590).

Almost surely, 2^61378959 is an apocalyptic number.

61378959 is a deficient number, since it is larger than the sum of its proper divisors (25273761).

61378959 is a wasteful number, since it uses less digits than its factorization.

61378959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203529.

The product of its digits is 408240, while the sum is 48.

The square root of 61378959 is about 7834.4724774550. The cubic root of 61378959 is about 394.4632114650.

The spelling of 61378959 in words is "sixty-one million, three hundred seventy-eight thousand, nine hundred fifty-nine".