60990077 has 2 divisors, whose sum is σ = 60990078. Its totient is φ = 60990076.

The previous prime is 60990053. The next prime is 60990079. The reversal of 60990077 is 77009906.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58079641 + 2910436 = 7621^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 60990077 - 2¹⁰ = 60989053 is a prime.

Together with 60990079, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60990077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60990079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30495038 + 30495039.

It is an arithmetic number, because the mean of its divisors is an integer number (30495039).

Almost surely, 2^60990077 is an apocalyptic number.

It is an amenable number.

60990077 is a deficient number, since it is larger than the sum of its proper divisors (1).

60990077 is an equidigital number, since it uses as much as digits as its factorization.

60990077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 60990077 is about 7809.6143950902. The cubic root of 60990077 is about 393.6283718732.

The spelling of 60990077 in words is "sixty million, nine hundred ninety thousand, seventy-seven".