745801861 has 4 divisors (see below), whose sum is σ = 852344992. Its totient is φ = 639258732.

The previous prime is 745801843. The next prime is 745801873. The reversal of 745801861 is 168108547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 745801861 - 2⁵ = 745801829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745801801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53271555 + ... + 53271568.

It is an arithmetic number, because the mean of its divisors is an integer number (213086248).

Almost surely, 2^745801861 is an apocalyptic number.

It is an amenable number.

745801861 is a deficient number, since it is larger than the sum of its proper divisors (106543131).

745801861 is a wasteful number, since it uses less digits than its factorization.

745801861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106543130.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 745801861 is about 27309.3731345119. The cubic root of 745801861 is about 906.8618957804.

The spelling of 745801861 in words is "seven hundred forty-five million, eight hundred one thousand, eight hundred sixty-one".