620554456 has 16 divisors (see below), whose sum is σ = 1165278600. Its totient is φ = 309813504.

The previous prime is 620554453. The next prime is 620554463. The reversal of 620554456 is 654455026.

It is a super-2 number, since 2×620554456² = 770175665722911872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620554453) 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, 52246 + ... + 63013.

Almost surely, 2^620554456 is an apocalyptic number.

It is an amenable number.

620554456 is a deficient number, since it is larger than the sum of its proper divisors (544724144).

620554456 is a wasteful number, since it uses less digits than its factorization.

620554456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115938 (or 115934 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 620554456 is about 24910.9304523135. The cubic root of 620554456 is about 852.9560084458.

The spelling of 620554456 in words is "six hundred twenty million, five hundred fifty-four thousand, four hundred fifty-six".