672095640 has 64 divisors (see below), whose sum is σ = 2018072160. Its totient is φ = 179066880.

The previous prime is 672095623. The next prime is 672095647. The reversal of 672095640 is 46590276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672095647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207312 + ... + 210528.

Almost surely, 2^672095640 is an apocalyptic number.

672095640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

672095640 is an abundant number, since it is smaller than the sum of its proper divisors (1345976520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672095640 is a wasteful number, since it uses less digits than its factorization.

672095640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972 (or 4968 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 672095640 is about 25924.8074245499. The cubic root of 672095640 is about 875.9453793011.

The spelling of 672095640 in words is "six hundred seventy-two million, ninety-five thousand, six hundred forty".