61723037 has 2 divisors, whose sum is σ = 61723038. Its totient is φ = 61723036.

The previous prime is 61723009. The next prime is 61723043. The reversal of 61723037 is 73032716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40691641 + 21031396 = 6379^2 + 4586^2 .

It is a cyclic number.

It is not a de Polignac number, because 61723037 - 2¹⁴ = 61706653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61723097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30861518 + 30861519.

It is an arithmetic number, because the mean of its divisors is an integer number (30861519).

Almost surely, 2^61723037 is an apocalyptic number.

It is an amenable number.

61723037 is a deficient number, since it is larger than the sum of its proper divisors (1).

61723037 is an equidigital number, since it uses as much as digits as its factorization.

61723037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 61723037 is about 7856.4010208237. The cubic root of 61723037 is about 395.1989320024.

The spelling of 61723037 in words is "sixty-one million, seven hundred twenty-three thousand, thirty-seven".