1620098677 has 2 divisors, whose sum is σ = 1620098678. Its totient is φ = 1620098676.

The previous prime is 1620098653. The next prime is 1620098729. The reversal of 1620098677 is 7768900261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1064977956 + 555120721 = 32634^2 + 23561^2 .

It is a cyclic number.

It is not a de Polignac number, because 1620098677 - 2¹⁹ = 1619574389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1620093677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810049338 + 810049339.

It is an arithmetic number, because the mean of its divisors is an integer number (810049339).

Almost surely, 2^1620098677 is an apocalyptic number.

It is an amenable number.

1620098677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620098677 is an equidigital number, since it uses as much as digits as its factorization.

1620098677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1620098677 is about 40250.4494012179. The cubic root of 1620098677 is about 1174.4841380020.

The spelling of 1620098677 in words is "one billion, six hundred twenty million, ninety-eight thousand, six hundred seventy-seven".