60999391 has 2 divisors, whose sum is σ = 60999392. Its totient is φ = 60999390.

The previous prime is 60999317. The next prime is 60999397. The reversal of 60999391 is 19399906.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60999391 - 2⁹ = 60998879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60999397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30499695 + 30499696.

It is an arithmetic number, because the mean of its divisors is an integer number (30499696).

Almost surely, 2^60999391 is an apocalyptic number.

60999391 is a deficient number, since it is larger than the sum of its proper divisors (1).

60999391 is an equidigital number, since it uses as much as digits as its factorization.

60999391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098, while the sum is 46.

The square root of 60999391 is about 7810.2106885794. The cubic root of 60999391 is about 393.6484082912.

It can be divided in two parts, 609 and 99391, that added together give a 5-th power (100000 = 10⁵).

The spelling of 60999391 in words is "sixty million, nine hundred ninety-nine thousand, three hundred ninety-one".