651461996 has 12 divisors (see below), whose sum is σ = 1140972840. Its totient is φ = 325469760.

The previous prime is 651461977. The next prime is 651461999. The reversal of 651461996 is 699164156.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 651461996.

It is not an unprimeable number, because it can be changed into a prime (651461999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59645 + ... + 69716.

It is an arithmetic number, because the mean of its divisors is an integer number (95081070).

Almost surely, 2^651461996 is an apocalyptic number.

It is an amenable number.

651461996 is a deficient number, since it is larger than the sum of its proper divisors (489510844).

651461996 is a wasteful number, since it uses less digits than its factorization.

651461996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130624 (or 130622 counting only the distinct ones).

The product of its digits is 349920, while the sum is 47.

The square root of 651461996 is about 25523.7535640822. The cubic root of 651461996 is about 866.8880744642. Note that the first 3 decimals are identical.

The spelling of 651461996 in words is "six hundred fifty-one million, four hundred sixty-one thousand, nine hundred ninety-six".