1677213679 has 2 divisors, whose sum is σ = 1677213680. Its totient is φ = 1677213678.

The previous prime is 1677213653. The next prime is 1677213757. The reversal of 1677213679 is 9763127761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1677213679 - 2²⁵ = 1643659247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1677213649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838606839 + 838606840.

It is an arithmetic number, because the mean of its divisors is an integer number (838606840).

Almost surely, 2^1677213679 is an apocalyptic number.

1677213679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1677213679 is an equidigital number, since it uses as much as digits as its factorization.

1677213679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792, while the sum is 49.

The square root of 1677213679 is about 40953.7993231397. The cubic root of 1677213679 is about 1188.1268175770.

The spelling of 1677213679 in words is "one billion, six hundred seventy-seven million, two hundred thirteen thousand, six hundred seventy-nine".