651453985 has 32 divisors (see below), whose sum is σ = 971212032. Its totient is φ = 408464640.

The previous prime is 651453977. The next prime is 651453997. The reversal of 651453985 is 589354156.

It is not a de Polignac number, because 651453985 - 2³ = 651453977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41995 + ... + 55375.

It is an arithmetic number, because the mean of its divisors is an integer number (30350376).

Almost surely, 2^651453985 is an apocalyptic number.

651453985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

651453985 is a deficient number, since it is larger than the sum of its proper divisors (319758047).

651453985 is a wasteful number, since it uses less digits than its factorization.

651453985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13513.

The product of its digits is 648000, while the sum is 46.

The square root of 651453985 is about 25523.5966313527. The cubic root of 651453985 is about 866.8845210879.

The spelling of 651453985 in words is "six hundred fifty-one million, four hundred fifty-three thousand, nine hundred eighty-five".