61811068 has 12 divisors (see below), whose sum is σ = 118003032. Its totient is φ = 28095920.

The previous prime is 61811059. The next prime is 61811077. The reversal of 61811068 is 86011816.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61811059) and next prime (61811077).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702355 + ... + 702442.

It is an arithmetic number, because the mean of its divisors is an integer number (9833586).

Almost surely, 2^61811068 is an apocalyptic number.

It is an amenable number.

61811068 is a deficient number, since it is larger than the sum of its proper divisors (56191964).

61811068 is a wasteful number, since it uses less digits than its factorization.

61811068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404812 (or 1404810 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 61811068 is about 7862.0015263290. The cubic root of 61811068 is about 395.3867237498.

The spelling of 61811068 in words is "sixty-one million, eight hundred eleven thousand, sixty-eight".