628697075 has 12 divisors (see below), whose sum is σ = 798599928. Its totient is φ = 490689600.

The previous prime is 628697071. The next prime is 628697087. The reversal of 628697075 is 570796826.

It is not a de Polignac number, because 628697075 - 2² = 628697071 is a prime.

It is a super-2 number, since 2×628697075² = 790520024227111250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628697071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305657 + ... + 307706.

It is an arithmetic number, because the mean of its divisors is an integer number (66549994).

Almost surely, 2^628697075 is an apocalyptic number.

628697075 is a deficient number, since it is larger than the sum of its proper divisors (169902853).

628697075 is a wasteful number, since it uses less digits than its factorization.

628697075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613414 (or 613409 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 628697075 is about 25073.8324753118. The cubic root of 628697075 is about 856.6705026063.

The spelling of 628697075 in words is "six hundred twenty-eight million, six hundred ninety-seven thousand, seventy-five".