61165387 has 8 divisors (see below), whose sum is σ = 63792512. Its totient is φ = 58579200.

The previous prime is 61165333. The next prime is 61165397. The reversal of 61165387 is 78356116.

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 61165387 - 2¹⁹ = 60641099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61165397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7164 + ... + 13177.

It is an arithmetic number, because the mean of its divisors is an integer number (7974064).

Almost surely, 2^61165387 is an apocalyptic number.

61165387 is a deficient number, since it is larger than the sum of its proper divisors (2627125).

61165387 is a wasteful number, since it uses less digits than its factorization.

61165387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20469.

The product of its digits is 30240, while the sum is 37.

The square root of 61165387 is about 7820.8303267620. The cubic root of 61165387 is about 394.0051598180.

The spelling of 61165387 in words is "sixty-one million, one hundred sixty-five thousand, three hundred eighty-seven".