61385650 has 12 divisors (see below), whose sum is σ = 114177402. Its totient is φ = 24554240.

The previous prime is 61385629. The next prime is 61385669. The reversal of 61385650 is 5658316.

It can be written as a sum of positive squares in 3 ways, for example, as 60047001 + 1338649 = 7749^2 + 1157^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 613807 + ... + 613906.

Almost surely, 2^61385650 is an apocalyptic number.

61385650 is a deficient number, since it is larger than the sum of its proper divisors (52791752).

61385650 is a wasteful number, since it uses less digits than its factorization.

61385650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227725 (or 1227720 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 61385650 is about 7834.8994888256. The cubic root of 61385650 is about 394.4775445931.

The spelling of 61385650 in words is "sixty-one million, three hundred eighty-five thousand, six hundred fifty".