61201836 has 36 divisors (see below), whose sum is σ = 163806552. Its totient is φ = 19200384.

The previous prime is 61201801. The next prime is 61201837. The reversal of 61201836 is 63810216.

61201836 is a `hidden beast` number, since 612 + 0 + 18 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

61201836 is a modest number, since divided by 1836 gives 612 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61201837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49390 + ... + 50613.

It is an arithmetic number, because the mean of its divisors is an integer number (4550182).

Almost surely, 2^61201836 is an apocalyptic number.

It is an amenable number.

61201836 is an abundant number, since it is smaller than the sum of its proper divisors (102604716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61201836 is a wasteful number, since it uses less digits than its factorization.

61201836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100030 (or 100025 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 61201836 is about 7823.1602310064. The cubic root of 61201836 is about 394.0834080075.

The spelling of 61201836 in words is "sixty-one million, two hundred one thousand, eight hundred thirty-six".