651429812 has 48 divisors (see below), whose sum is σ = 1281256704. Its totient is φ = 287232000.

The previous prime is 651429809. The next prime is 651429827. The reversal of 651429812 is 218924156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347237 + ... + 349107.

It is an arithmetic number, because the mean of its divisors is an integer number (26692848).

Almost surely, 2^651429812 is an apocalyptic number.

It is an amenable number.

651429812 is a deficient number, since it is larger than the sum of its proper divisors (629826892).

651429812 is a wasteful number, since it uses less digits than its factorization.

651429812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2118 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 651429812 is about 25523.1230847637. The cubic root of 651429812 is about 866.8737986838.

The spelling of 651429812 in words is "six hundred fifty-one million, four hundred twenty-nine thousand, eight hundred twelve".