720145859 has 4 divisors (see below), whose sum is σ = 722046360. Its totient is φ = 718245360.

The previous prime is 720145831. The next prime is 720145871. The reversal of 720145859 is 958541027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 958541027 = 73 ⋅13130699.

It is a cyclic number.

It is not a de Polignac number, because 720145859 - 2¹⁶ = 720080323 is a prime.

It is a super-2 number, since 2×720145859² = 1037220116469695762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720145879) 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, 949682 + ... + 950439.

It is an arithmetic number, because the mean of its divisors is an integer number (180511590).

Almost surely, 2^720145859 is an apocalyptic number.

720145859 is a deficient number, since it is larger than the sum of its proper divisors (1900501).

720145859 is a wasteful number, since it uses less digits than its factorization.

720145859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900500.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 720145859 is about 26835.5335143537. The cubic root of 720145859 is about 896.3414686707.

The spelling of 720145859 in words is "seven hundred twenty million, one hundred forty-five thousand, eight hundred fifty-nine".