61418961 has 6 divisors (see below), whose sum is σ = 88716290. Its totient is φ = 40945968.

The previous prime is 61418939. The next prime is 61418971. The reversal of 61418961 is 16981416.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50979600 + 10439361 = 7140^2 + 3231^2 .

It is not a de Polignac number, because 61418961 - 2⁹ = 61418449 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61418971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3412156 + ... + 3412173.

Almost surely, 2^61418961 is an apocalyptic number.

It is an amenable number.

61418961 is a deficient number, since it is larger than the sum of its proper divisors (27297329).

61418961 is a wasteful number, since it uses less digits than its factorization.

61418961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6824335 (or 6824332 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 61418961 is about 7837.0250095301. The cubic root of 61418961 is about 394.5488862683.

The spelling of 61418961 in words is "sixty-one million, four hundred eighteen thousand, nine hundred sixty-one".