61165667 has 4 divisors (see below), whose sum is σ = 61183920. Its totient is φ = 61147416.

The previous prime is 61165661. The next prime is 61165681. The reversal of 61165667 is 76656116.

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 61165667 - 2²² = 56971363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61165667.

It is not an unprimeable number, because it can be changed into a prime (61165661) 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, 2492 + ... + 11337.

It is an arithmetic number, because the mean of its divisors is an integer number (15295980).

Almost surely, 2^61165667 is an apocalyptic number.

61165667 is a deficient number, since it is larger than the sum of its proper divisors (18253).

61165667 is a wasteful number, since it uses less digits than its factorization.

61165667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18252.

The product of its digits is 45360, while the sum is 38.

The square root of 61165667 is about 7820.8482276541. The cubic root of 61165667 is about 394.0057610365.

The spelling of 61165667 in words is "sixty-one million, one hundred sixty-five thousand, six hundred sixty-seven".