745294678669 has 2 divisors, whose sum is σ = 745294678670. Its totient is φ = 745294678668.

The previous prime is 745294678607. The next prime is 745294678753. The reversal of 745294678669 is 966876492547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592599738025 + 152694940644 = 769805^2 + 390762^2 .

It is a cyclic number.

It is not a de Polignac number, because 745294678669 - 2²⁹ = 744757807757 is a prime.

It is a super-2 number, since 2×745294678669² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745294678169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372647339334 + 372647339335.

It is an arithmetic number, because the mean of its divisors is an integer number (372647339335).

Almost surely, 2^745294678669 is an apocalyptic number.

It is an amenable number.

745294678669 is a deficient number, since it is larger than the sum of its proper divisors (1).

745294678669 is an equidigital number, since it uses as much as digits as its factorization.

745294678669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097349120, while the sum is 73.

The spelling of 745294678669 in words is "seven hundred forty-five billion, two hundred ninety-four million, six hundred seventy-eight thousand, six hundred sixty-nine".