745753861 has 2 divisors, whose sum is σ = 745753862. Its totient is φ = 745753860.

The previous prime is 745753849. The next prime is 745753889. The reversal of 745753861 is 168357547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537961636 + 207792225 = 23194^2 + 14415^2 .

It is an emirp because it is prime and its reverse (168357547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745753861 - 2⁵ = 745753829 is a prime.

It is a super-2 number, since 2×745753861² = 1112297642392814642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745753891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372876930 + 372876931.

It is an arithmetic number, because the mean of its divisors is an integer number (372876931).

Almost surely, 2^745753861 is an apocalyptic number.

It is an amenable number.

745753861 is a deficient number, since it is larger than the sum of its proper divisors (1).

745753861 is an equidigital number, since it uses as much as digits as its factorization.

745753861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 46.

The square root of 745753861 is about 27308.4943012243. The cubic root of 745753861 is about 906.8424400746.

It can be divided in two parts, 745 and 753861, that added together give a triangular number (754606 = T₁₂₂₈).

The spelling of 745753861 in words is "seven hundred forty-five million, seven hundred fifty-three thousand, eight hundred sixty-one".