672497551 has 12 divisors (see below), whose sum is σ = 740016256. Its totient is φ = 610679520.

The previous prime is 672497531. The next prime is 672497557. The reversal of 672497551 is 155794276.

It is not a de Polignac number, because 672497551 - 2⁵ = 672497519 is a prime.

It is a super-2 number, since 2×672497551² = 904505912201995202, 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 (672497557) 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 11 ways as a sum of consecutive naturals, for example, 128971 + ... + 134083.

Almost surely, 2^672497551 is an apocalyptic number.

672497551 is a deficient number, since it is larger than the sum of its proper divisors (67518705).

672497551 is a wasteful number, since it uses less digits than its factorization.

672497551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222 (or 6211 counting only the distinct ones).

The product of its digits is 529200, while the sum is 46.

The square root of 672497551 is about 25932.5577411870. The cubic root of 672497551 is about 876.1199486681.

The spelling of 672497551 in words is "six hundred seventy-two million, four hundred ninety-seven thousand, five hundred fifty-one".