620656026 has 32 divisors (see below), whose sum is σ = 1315398528. Its totient is φ = 194557440.

The previous prime is 620655979. The next prime is 620656027.

620656026 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×620656026² = 770427805220225352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620656027) 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, 234406 + ... + 237038.

It is an arithmetic number, because the mean of its divisors is an integer number (41106204).

Almost surely, 2^620656026 is an apocalyptic number.

620656026 is an abundant number, since it is smaller than the sum of its proper divisors (694742502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620656026 is a wasteful number, since it uses less digits than its factorization.

620656026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 620656026 is about 24912.9690322129. The cubic root of 620656026 is about 853.0025421087.

The spelling of 620656026 in words is "six hundred twenty million, six hundred fifty-six thousand, twenty-six".