621253534 has 8 divisors (see below), whose sum is σ = 1016596728. Its totient is φ = 282387960.

The previous prime is 621253531. The next prime is 621253537. The reversal of 621253534 is 435352126.

It is a happy number.

621253534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (621253531) and next prime (621253537).

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

It is a junction number, because it is equal to n+sod(n) for n = 621253496 and 621253505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621253531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14119377 + ... + 14119420.

It is an arithmetic number, because the mean of its divisors is an integer number (127074591).

Almost surely, 2^621253534 is an apocalyptic number.

621253534 is a deficient number, since it is larger than the sum of its proper divisors (395343194).

621253534 is a wasteful number, since it uses less digits than its factorization.

621253534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28238810.

The product of its digits is 21600, while the sum is 31.

The square root of 621253534 is about 24924.9580541272. The cubic root of 621253534 is about 853.2761839507.

The spelling of 621253534 in words is "six hundred twenty-one million, two hundred fifty-three thousand, five hundred thirty-four".