61650536 has 8 divisors (see below), whose sum is σ = 115594770. Its totient is φ = 30825264.

The previous prime is 61650529. The next prime is 61650539. The reversal of 61650536 is 63505616.

It can be written as a sum of positive squares in only one way, i.e., 38514436 + 23136100 = 6206^2 + 4810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (61650539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3853151 + ... + 3853166.

Almost surely, 2^61650536 is an apocalyptic number.

It is an amenable number.

61650536 is a deficient number, since it is larger than the sum of its proper divisors (53944234).

61650536 is a wasteful number, since it uses less digits than its factorization.

61650536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7706323 (or 7706319 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 61650536 is about 7851.7855294194. The cubic root of 61650536 is about 395.0441354305.

The spelling of 61650536 in words is "sixty-one million, six hundred fifty thousand, five hundred thirty-six".