61400036 has 12 divisors (see below), whose sum is σ = 107595180. Its totient is φ = 30658560.

The previous prime is 61400033. The next prime is 61400063. The reversal of 61400036 is 63000416.

It can be written as a sum of positive squares in 2 ways, for example, as 42823936 + 18576100 = 6544^2 + 4310^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61399990 and 61400017.

It is not an unprimeable number, because it can be changed into a prime (61400033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6905 + ... + 13056.

It is an arithmetic number, because the mean of its divisors is an integer number (8966265).

Almost surely, 2^61400036 is an apocalyptic number.

It is an amenable number.

61400036 is a deficient number, since it is larger than the sum of its proper divisors (46195144).

61400036 is a wasteful number, since it uses less digits than its factorization.

61400036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20734 (or 20732 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 61400036 is about 7835.8175068081. The cubic root of 61400036 is about 394.5083580416.

The spelling of 61400036 in words is "sixty-one million, four hundred thousand, thirty-six".