61381367 has 4 divisors (see below), whose sum is σ = 62539560. Its totient is φ = 60223176.

The previous prime is 61381357. The next prime is 61381403. The reversal of 61381367 is 76318316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61381367 - 2⁶ = 61381303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61381357) 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, 579017 + ... + 579122.

It is an arithmetic number, because the mean of its divisors is an integer number (15634890).

Almost surely, 2^61381367 is an apocalyptic number.

61381367 is a deficient number, since it is larger than the sum of its proper divisors (1158193).

61381367 is a wasteful number, since it uses less digits than its factorization.

61381367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158192.

The product of its digits is 18144, while the sum is 35.

The square root of 61381367 is about 7834.6261557269. The cubic root of 61381367 is about 394.4683698831.

The spelling of 61381367 in words is "sixty-one million, three hundred eighty-one thousand, three hundred sixty-seven".