620140791 has 16 divisors (see below), whose sum is σ = 870912000. Its totient is φ = 391425408.

The previous prime is 620140783. The next prime is 620140813. The reversal of 620140791 is 197041026.

It is a happy number.

It is not a de Polignac number, because 620140791 - 2³ = 620140783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620140721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151135 + ... + 155183.

It is an arithmetic number, because the mean of its divisors is an integer number (54432000).

Almost surely, 2^620140791 is an apocalyptic number.

620140791 is a deficient number, since it is larger than the sum of its proper divisors (250771209).

620140791 is a wasteful number, since it uses less digits than its factorization.

620140791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 620140791 is about 24902.6261868101. The cubic root of 620140791 is about 852.7664379340.

The spelling of 620140791 in words is "six hundred twenty million, one hundred forty thousand, seven hundred ninety-one".