61506007 has 2 divisors, whose sum is σ = 61506008. Its totient is φ = 61506006.

The previous prime is 61506001. The next prime is 61506037. The reversal of 61506007 is 70060516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61506007 - 2³ = 61505999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61506001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30753003 + 30753004.

It is an arithmetic number, because the mean of its divisors is an integer number (30753004).

Almost surely, 2^61506007 is an apocalyptic number.

61506007 is a deficient number, since it is larger than the sum of its proper divisors (1).

61506007 is an equidigital number, since it uses as much as digits as its factorization.

61506007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 61506007 is about 7842.5765536589. The cubic root of 61506007 is about 394.7351897047.

The spelling of 61506007 in words is "sixty-one million, five hundred six thousand, seven".