61897067 has 4 divisors (see below), whose sum is σ = 62465040. Its totient is φ = 61329096.

The previous prime is 61897027. The next prime is 61897091. The reversal of 61897067 is 76079816.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61897067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61897027) 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, 283823 + ... + 284040.

It is an arithmetic number, because the mean of its divisors is an integer number (15616260).

Almost surely, 2^61897067 is an apocalyptic number.

61897067 is a deficient number, since it is larger than the sum of its proper divisors (567973).

61897067 is a wasteful number, since it uses less digits than its factorization.

61897067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567972.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 61897067 is about 7867.4689068340. The cubic root of 61897067 is about 395.5700086452.

The spelling of 61897067 in words is "sixty-one million, eight hundred ninety-seven thousand, sixty-seven".