621678098 has 8 divisors (see below), whose sum is σ = 937727280. Its totient is φ = 309102340.

The previous prime is 621678091. The next prime is 621678131. The reversal of 621678098 is 890876126.

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

It is not an unprimeable number, because it can be changed into a prime (621678091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867908 + ... + 868623.

It is an arithmetic number, because the mean of its divisors is an integer number (117215910).

Almost surely, 2^621678098 is an apocalyptic number.

621678098 is a deficient number, since it is larger than the sum of its proper divisors (316049182).

621678098 is a wasteful number, since it uses less digits than its factorization.

621678098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736712.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 621678098 is about 24933.4734443479. The cubic root of 621678098 is about 853.4705156989.

The spelling of 621678098 in words is "six hundred twenty-one million, six hundred seventy-eight thousand, ninety-eight".