628061553 has 32 divisors (see below), whose sum is σ = 1071544320. Its totient is φ = 356138640.

The previous prime is 628061537. The next prime is 628061561. The reversal of 628061553 is 355160826.

It is not a de Polignac number, because 628061553 - 2⁴ = 628061537 is a prime.

It is a super-2 number, since 2×628061553² = 788922628713543618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (628061563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12076 + ... + 37442.

It is an arithmetic number, because the mean of its divisors is an integer number (33485760).

Almost surely, 2^628061553 is an apocalyptic number.

628061553 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

628061553 is a deficient number, since it is larger than the sum of its proper divisors (443482767).

628061553 is a wasteful number, since it uses less digits than its factorization.

628061553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514 (or 25508 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 628061553 is about 25061.1562582416. The cubic root of 628061553 is about 856.3817485446.

The spelling of 628061553 in words is "six hundred twenty-eight million, sixty-one thousand, five hundred fifty-three".