720401149 has 4 divisors (see below), whose sum is σ = 775816636. Its totient is φ = 664985664.

The previous prime is 720401107. The next prime is 720401153. The reversal of 720401149 is 941104027.

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 203975524 + 516425625 = 14282^2 + 22725^2 .

It is a cyclic number.

It is not a de Polignac number, because 720401149 - 2¹¹ = 720399101 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 (720401189) 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, 27707724 + ... + 27707749.

It is an arithmetic number, because the mean of its divisors is an integer number (193954159).

Almost surely, 2^720401149 is an apocalyptic number.

It is an amenable number.

720401149 is a deficient number, since it is larger than the sum of its proper divisors (55415487).

720401149 is a wasteful number, since it uses less digits than its factorization.

720401149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55415486.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 720401149 is about 26840.2896593908. The cubic root of 720401149 is about 896.4473731328.

The spelling of 720401149 in words is "seven hundred twenty million, four hundred one thousand, one hundred forty-nine".