620454000 has 80 divisors (see below), whose sum is σ = 2000363040. Its totient is φ = 165452800.

The previous prime is 620453993. The next prime is 620454007. The reversal of 620454000 is 454026.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (620453993) and next prime (620454007).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×620454000² = 769926332232000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620454007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45705 + ... + 57704.

It is an arithmetic number, because the mean of its divisors is an integer number (25004538).

Almost surely, 2^620454000 is an apocalyptic number.

620454000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620454000 is an abundant number, since it is smaller than the sum of its proper divisors (1379909040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620454000 is a wasteful number, since it uses less digits than its factorization.

620454000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103435 (or 103419 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 620454000 is about 24908.9140670564. The cubic root of 620454000 is about 852.9099801604.

The spelling of 620454000 in words is "six hundred twenty million, four hundred fifty-four thousand".