61158963 has 8 divisors (see below), whose sum is σ = 81592768. Its totient is φ = 40748904.

The previous prime is 61158961. The next prime is 61158973. The reversal of 61158963 is 36985116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61158963 - 2¹ = 61158961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61158961) 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, 1356 + ... + 11142.

It is an arithmetic number, because the mean of its divisors is an integer number (10199096).

Almost surely, 2^61158963 is an apocalyptic number.

61158963 is a deficient number, since it is larger than the sum of its proper divisors (20433805).

61158963 is a wasteful number, since it uses less digits than its factorization.

61158963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11873.

The product of its digits is 38880, while the sum is 39.

The square root of 61158963 is about 7820.4196178978. The cubic root of 61158963 is about 393.9913656452.

The spelling of 61158963 in words is "sixty-one million, one hundred fifty-eight thousand, nine hundred sixty-three".