620893877 has 4 divisors (see below), whose sum is σ = 625061100. Its totient is φ = 616726656.

The previous prime is 620893849. The next prime is 620893879. The reversal of 620893877 is 778398026.

It is a happy number.

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 347785201 + 273108676 = 18649^2 + 16526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620893877 is a prime.

It is a super-2 number, since 2×620893877² = 771018412992182258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620893879) 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, 2083388 + ... + 2083685.

It is an arithmetic number, because the mean of its divisors is an integer number (156265275).

Almost surely, 2^620893877 is an apocalyptic number.

It is an amenable number.

620893877 is a deficient number, since it is larger than the sum of its proper divisors (4167223).

620893877 is a wasteful number, since it uses less digits than its factorization.

620893877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167222.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 620893877 is about 24917.7422131300. The cubic root of 620893877 is about 853.1114922021. Note that the first 3 decimals are identical.

The spelling of 620893877 in words is "six hundred twenty million, eight hundred ninety-three thousand, eight hundred seventy-seven".