61850961 has 6 divisors (see below), whose sum is σ = 89340290. Its totient is φ = 41233968.

The previous prime is 61850953. The next prime is 61850977. The reversal of 61850961 is 16905816.

It can be written as a sum of positive squares in only one way, i.e., 31809600 + 30041361 = 5640^2 + 5481^2 .

It is not a de Polignac number, because 61850961 - 2³ = 61850953 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61850941) 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, 3436156 + ... + 3436173.

Almost surely, 2^61850961 is an apocalyptic number.

It is an amenable number.

61850961 is a deficient number, since it is larger than the sum of its proper divisors (27489329).

61850961 is a wasteful number, since it uses less digits than its factorization.

61850961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6872335 (or 6872332 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 61850961 is about 7864.5381936894. The cubic root of 61850961 is about 395.4717666121.

The spelling of 61850961 in words is "sixty-one million, eight hundred fifty thousand, nine hundred sixty-one".