628041501 has 6 divisors (see below), whose sum is σ = 907171070. Its totient is φ = 418694328.

The previous prime is 628041461. The next prime is 628041503. The reversal of 628041501 is 105140826.

It can be written as a sum of positive squares in only one way, i.e., 597802500 + 30239001 = 24450^2 + 5499^2 .

It is not a de Polignac number, because 628041501 - 2⁹ = 628040989 is a prime.

It is a super-2 number, since 2×628041501² = 788872253956666002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628041503) 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 5 ways as a sum of consecutive naturals, for example, 34891186 + ... + 34891203.

Almost surely, 2^628041501 is an apocalyptic number.

It is an amenable number.

628041501 is a deficient number, since it is larger than the sum of its proper divisors (279129569).

628041501 is a wasteful number, since it uses less digits than its factorization.

628041501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69782395 (or 69782392 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 628041501 is about 25060.7561936985. The cubic root of 628041501 is about 856.3726346027.

The spelling of 628041501 in words is "six hundred twenty-eight million, forty-one thousand, five hundred one".