72672649 has 8 divisors (see below), whose sum is σ = 85733888. Its totient is φ = 60281280.

The previous prime is 72672647. The next prime is 72672659. The reversal of 72672649 is 94627627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72672649 - 2¹ = 72672647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72672641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167232 + ... + 167665.

It is an arithmetic number, because the mean of its divisors is an integer number (10716736).

Almost surely, 2^72672649 is an apocalyptic number.

It is an amenable number.

72672649 is a deficient number, since it is larger than the sum of its proper divisors (13061239).

72672649 is a wasteful number, since it uses less digits than its factorization.

72672649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334935.

The product of its digits is 254016, while the sum is 43.

The square root of 72672649 is about 8524.8254527585. The cubic root of 72672649 is about 417.3082753625.

The spelling of 72672649 in words is "seventy-two million, six hundred seventy-two thousand, six hundred forty-nine".