620387998 has 8 divisors (see below), whose sum is σ = 935723880. Its totient is φ = 308480040.

The previous prime is 620387983. The next prime is 620388001. The reversal of 620387998 is 899783026.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856528 + ... + 857251.

It is an arithmetic number, because the mean of its divisors is an integer number (116965485).

Almost surely, 2^620387998 is an apocalyptic number.

620387998 is a deficient number, since it is larger than the sum of its proper divisors (315335882).

620387998 is a wasteful number, since it uses less digits than its factorization.

620387998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713962.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 620387998 is about 24907.5891647506. The cubic root of 620387998 is about 852.8797357691.

The spelling of 620387998 in words is "six hundred twenty million, three hundred eighty-seven thousand, nine hundred ninety-eight".