745718401 has 4 divisors (see below), whose sum is σ = 746770900. Its totient is φ = 744665904.

The previous prime is 745718357. The next prime is 745718411. The reversal of 745718401 is 104817547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 267159025 + 478559376 = 16345^2 + 21876^2 .

It is a cyclic number.

It is not a de Polignac number, because 745718401 - 2¹⁷ = 745587329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745718411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525186 + ... + 526603.

It is an arithmetic number, because the mean of its divisors is an integer number (186692725).

Almost surely, 2^745718401 is an apocalyptic number.

It is an amenable number.

745718401 is a deficient number, since it is larger than the sum of its proper divisors (1052499).

745718401 is a wasteful number, since it uses less digits than its factorization.

745718401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052498.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 745718401 is about 27307.8450449683. The cubic root of 745718401 is about 906.8280666357.

The spelling of 745718401 in words is "seven hundred forty-five million, seven hundred eighteen thousand, four hundred one".