672154901 has 4 divisors (see below), whose sum is σ = 733259904. Its totient is φ = 611049900.

The previous prime is 672154897. The next prime is 672154909. The reversal of 672154901 is 109451276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 672154901 - 2² = 672154897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672154909) 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, 30552485 + ... + 30552506.

It is an arithmetic number, because the mean of its divisors is an integer number (183314976).

Almost surely, 2^672154901 is an apocalyptic number.

It is an amenable number.

672154901 is a deficient number, since it is larger than the sum of its proper divisors (61105003).

672154901 is a wasteful number, since it uses less digits than its factorization.

672154901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61105002.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 672154901 is about 25925.9503393800. The cubic root of 672154901 is about 875.9711235903.

The spelling of 672154901 in words is "six hundred seventy-two million, one hundred fifty-four thousand, nine hundred one".