1672745667 has 32 divisors (see below), whose sum is σ = 2311011648. Its totient is φ = 1075716096.

The previous prime is 1672745621. The next prime is 1672745687. The reversal of 1672745667 is 7665472761.

It is a happy number.

It is not a de Polignac number, because 1672745667 - 2⁷ = 1672745539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1672745687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2820523 + ... + 2821115.

It is an arithmetic number, because the mean of its divisors is an integer number (72219114).

Almost surely, 2^1672745667 is an apocalyptic number.

1672745667 is a deficient number, since it is larger than the sum of its proper divisors (638265981).

1672745667 is a wasteful number, since it uses less digits than its factorization.

1672745667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919.

The product of its digits is 2963520, while the sum is 51.

The square root of 1672745667 is about 40899.2135254457. The cubic root of 1672745667 is about 1187.0708428475.

The spelling of 1672745667 in words is "one billion, six hundred seventy-two million, seven hundred forty-five thousand, six hundred sixty-seven".