620657026 has 8 divisors (see below), whose sum is σ = 1015620624. Its totient is φ = 282116820.

The previous prime is 620657017. The next prime is 620657027. The reversal of 620657026 is 620756026.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 620656982 and 620657000.

It is not an unprimeable number, because it can be changed into a prime (620657027) 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, 14105820 + ... + 14105863.

It is an arithmetic number, because the mean of its divisors is an integer number (126952578).

Almost surely, 2^620657026 is an apocalyptic number.

620657026 is a deficient number, since it is larger than the sum of its proper divisors (394963598).

620657026 is a wasteful number, since it uses less digits than its factorization.

620657026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28211696.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 620657026 is about 24912.9891020728. The cubic root of 620657026 is about 853.0030002272.

The spelling of 620657026 in words is "six hundred twenty million, six hundred fifty-seven thousand, twenty-six".