61911364 has 6 divisors (see below), whose sum is σ = 108344894. Its totient is φ = 30955680.

The previous prime is 61911349. The next prime is 61911391. The reversal of 61911364 is 46311916.

It can be written as a sum of positive squares in only one way, i.e., 44622400 + 17288964 = 6680^2 + 4158^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7738917 + ... + 7738924.

Almost surely, 2^61911364 is an apocalyptic number.

It is an amenable number.

61911364 is a deficient number, since it is larger than the sum of its proper divisors (46433530).

61911364 is a wasteful number, since it uses less digits than its factorization.

61911364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15477845 (or 15477843 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 61911364 is about 7868.3774693389. The cubic root of 61911364 is about 395.6004625871.

The spelling of 61911364 in words is "sixty-one million, nine hundred eleven thousand, three hundred sixty-four".