621044674 has 4 divisors (see below), whose sum is σ = 931567014. Its totient is φ = 310522336.

The previous prime is 621044609. The next prime is 621044681. The reversal of 621044674 is 476440126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476440126 = 2 ⋅238220063.

It can be written as a sum of positive squares in only one way, i.e., 406627225 + 214417449 = 20165^2 + 14643^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 155261167 + ... + 155261170.

Almost surely, 2^621044674 is an apocalyptic number.

621044674 is a deficient number, since it is larger than the sum of its proper divisors (310522340).

621044674 is a wasteful number, since it uses less digits than its factorization.

621044674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310522339.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 621044674 is about 24920.7679255676. The cubic root of 621044674 is about 853.1805519051.

The spelling of 621044674 in words is "six hundred twenty-one million, forty-four thousand, six hundred seventy-four".