61374737 has 2 divisors, whose sum is σ = 61374738. Its totient is φ = 61374736.

The previous prime is 61374697. The next prime is 61374751. The reversal of 61374737 is 73747316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61324561 + 50176 = 7831^2 + 224^2 .

It is a cyclic number.

It is not a de Polignac number, because 61374737 - 2⁶ = 61374673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61374737.

It is not a weakly prime, because it can be changed into another prime (61374757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30687368 + 30687369.

It is an arithmetic number, because the mean of its divisors is an integer number (30687369).

Almost surely, 2^61374737 is an apocalyptic number.

It is an amenable number.

61374737 is a deficient number, since it is larger than the sum of its proper divisors (1).

61374737 is an equidigital number, since it uses as much as digits as its factorization.

61374737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088, while the sum is 38.

The square root of 61374737 is about 7834.2030226437. The cubic root of 61374737 is about 394.4541667701.

The spelling of 61374737 in words is "sixty-one million, three hundred seventy-four thousand, seven hundred thirty-seven".