628547377 has 4 divisors (see below), whose sum is σ = 628600176. Its totient is φ = 628494580.

The previous prime is 628547371. The next prime is 628547389. The reversal of 628547377 is 773745826.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 628547377 - 2¹¹ = 628545329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 628547377.

It is not an unprimeable number, because it can be changed into a prime (628547371) 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, 798 + ... + 35464.

It is an arithmetic number, because the mean of its divisors is an integer number (157150044).

Almost surely, 2^628547377 is an apocalyptic number.

It is an amenable number.

628547377 is a deficient number, since it is larger than the sum of its proper divisors (52799).

628547377 is a wasteful number, since it uses less digits than its factorization.

628547377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52798.

The product of its digits is 1975680, while the sum is 49.

The square root of 628547377 is about 25070.8471536165. The cubic root of 628547377 is about 856.6025037529.

The spelling of 628547377 in words is "six hundred twenty-eight million, five hundred forty-seven thousand, three hundred seventy-seven".