720542167 has 4 divisors (see below), whose sum is σ = 723106656. Its totient is φ = 717977680.

The previous prime is 720542153. The next prime is 720542171. The reversal of 720542167 is 761245027.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720542167 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 (720542177) 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, 1281823 + ... + 1282384.

It is an arithmetic number, because the mean of its divisors is an integer number (180776664).

Almost surely, 2^720542167 is an apocalyptic number.

720542167 is a deficient number, since it is larger than the sum of its proper divisors (2564489).

720542167 is a wasteful number, since it uses less digits than its factorization.

720542167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564488.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 720542167 is about 26842.9165144177. The cubic root of 720542167 is about 896.5058622899.

The spelling of 720542167 in words is "seven hundred twenty million, five hundred forty-two thousand, one hundred sixty-seven".