61701137 has 4 divisors (see below), whose sum is σ = 61920996. Its totient is φ = 61481280.

The previous prime is 61701091. The next prime is 61701139. The reversal of 61701137 is 73110716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48385936 + 13315201 = 6956^2 + 3649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61701137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61701139) 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, 109508 + ... + 110069.

It is an arithmetic number, because the mean of its divisors is an integer number (15480249).

Almost surely, 2^61701137 is an apocalyptic number.

It is an amenable number.

61701137 is a deficient number, since it is larger than the sum of its proper divisors (219859).

61701137 is a wasteful number, since it uses less digits than its factorization.

61701137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219858.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 61701137 is about 7855.0071292138. The cubic root of 61701137 is about 395.1521861905.

The spelling of 61701137 in words is "sixty-one million, seven hundred one thousand, one hundred thirty-seven".