628962761 has 8 divisors (see below), whose sum is σ = 750067584. Its totient is φ = 515671200.

The previous prime is 628962749. The next prime is 628962791. The reversal of 628962761 is 167269826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628962761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628962731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953140 + ... + 1953461.

It is an arithmetic number, because the mean of its divisors is an integer number (93758448).

Almost surely, 2^628962761 is an apocalyptic number.

It is an amenable number.

628962761 is a deficient number, since it is larger than the sum of its proper divisors (121104823).

628962761 is a wasteful number, since it uses less digits than its factorization.

628962761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906631.

The product of its digits is 435456, while the sum is 47.

The square root of 628962761 is about 25079.1299888971. The cubic root of 628962761 is about 856.7911613008.

The spelling of 628962761 in words is "six hundred twenty-eight million, nine hundred sixty-two thousand, seven hundred sixty-one".