61167961 has 8 divisors (see below), whose sum is σ = 61934400. Its totient is φ = 60406320.

The previous prime is 61167949. The next prime is 61167983. The reversal of 61167961 is 16976116.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61167961 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 61167961.

It is not an unprimeable number, because it can be changed into a prime (61167901) 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, 28980 + ... + 31018.

It is an arithmetic number, because the mean of its divisors is an integer number (7741800).

Almost surely, 2^61167961 is an apocalyptic number.

It is an amenable number.

61167961 is a deficient number, since it is larger than the sum of its proper divisors (766439).

61167961 is a wasteful number, since it uses less digits than its factorization.

61167961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399.

The product of its digits is 13608, while the sum is 37.

The square root of 61167961 is about 7820.9948855628. The cubic root of 61167961 is about 394.0106866642.

It can be divided in two parts, 61167 and 961, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 61167961 in words is "sixty-one million, one hundred sixty-seven thousand, nine hundred sixty-one".