628762678 has 4 divisors (see below), whose sum is σ = 943144020. Its totient is φ = 314381338.

The previous prime is 628762657. The next prime is 628762679. The reversal of 628762678 is 876267826.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628762679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157190668 + ... + 157190671.

It is an arithmetic number, because the mean of its divisors is an integer number (235786005).

Almost surely, 2^628762678 is an apocalyptic number.

628762678 is a deficient number, since it is larger than the sum of its proper divisors (314381342).

628762678 is a wasteful number, since it uses less digits than its factorization.

628762678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314381341.

The product of its digits is 2709504, while the sum is 52.

The square root of 628762678 is about 25075.1406376913. The cubic root of 628762678 is about 856.7002987262.

The spelling of 628762678 in words is "six hundred twenty-eight million, seven hundred sixty-two thousand, six hundred seventy-eight".