61357739 has 2 divisors, whose sum is σ = 61357740. Its totient is φ = 61357738.

The previous prime is 61357697. The next prime is 61357819. The reversal of 61357739 is 93775316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61357739 - 2²⁰ = 60309163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61357696 and 61357705.

It is not a weakly prime, because it can be changed into another prime (61357039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30678869 + 30678870.

It is an arithmetic number, because the mean of its divisors is an integer number (30678870).

Almost surely, 2^61357739 is an apocalyptic number.

61357739 is a deficient number, since it is larger than the sum of its proper divisors (1).

61357739 is an equidigital number, since it uses as much as digits as its factorization.

61357739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 41.

The square root of 61357739 is about 7833.1180892413. The cubic root of 61357739 is about 394.4177481429.

The spelling of 61357739 in words is "sixty-one million, three hundred fifty-seven thousand, seven hundred thirty-nine".