61505707 has 2 divisors, whose sum is σ = 61505708. Its totient is φ = 61505706.

The previous prime is 61505701. The next prime is 61505753. The reversal of 61505707 is 70750516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61505707 - 2⁷ = 61505579 is a prime.

It is not a weakly prime, because it can be changed into another prime (61505701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30752853 + 30752854.

It is an arithmetic number, because the mean of its divisors is an integer number (30752854).

Almost surely, 2^61505707 is an apocalyptic number.

61505707 is a deficient number, since it is larger than the sum of its proper divisors (1).

61505707 is an equidigital number, since it uses as much as digits as its factorization.

61505707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 61505707 is about 7842.5574272682. The cubic root of 61505707 is about 394.7345479205.

The spelling of 61505707 in words is "sixty-one million, five hundred five thousand, seven hundred seven".