620517244 has 6 divisors (see below), whose sum is σ = 1085905184. Its totient is φ = 310258620.

The previous prime is 620517241. The next prime is 620517259. The reversal of 620517244 is 442715026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620517241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77564652 + ... + 77564659.

Almost surely, 2^620517244 is an apocalyptic number.

It is an amenable number.

620517244 is a deficient number, since it is larger than the sum of its proper divisors (465387940).

620517244 is a wasteful number, since it uses less digits than its factorization.

620517244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155129315 (or 155129313 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 620517244 is about 24910.1835400705. The cubic root of 620517244 is about 852.9389587289.

The spelling of 620517244 in words is "six hundred twenty million, five hundred seventeen thousand, two hundred forty-four".