621260674 has 4 divisors (see below), whose sum is σ = 931891014. Its totient is φ = 310630336.

The previous prime is 621260641. The next prime is 621260681. The reversal of 621260674 is 476062126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476062126 = 2 ⋅238031063.

It can be written as a sum of positive squares in only one way, i.e., 612810025 + 8450649 = 24755^2 + 2907^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155315167 + ... + 155315170.

Almost surely, 2^621260674 is an apocalyptic number.

621260674 is a deficient number, since it is larger than the sum of its proper divisors (310630340).

621260674 is a wasteful number, since it uses less digits than its factorization.

621260674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310630339.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 621260674 is about 24925.1012836458. The cubic root of 621260674 is about 853.2794528087.

The spelling of 621260674 in words is "six hundred twenty-one million, two hundred sixty thousand, six hundred seventy-four".