72377983 has 4 divisors (see below), whose sum is σ = 73294240. Its totient is φ = 71461728.

The previous prime is 72377971. The next prime is 72377999. The reversal of 72377983 is 38977327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72377983 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 (72377923) 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, 458010 + ... + 458167.

It is an arithmetic number, because the mean of its divisors is an integer number (18323560).

Almost surely, 2^72377983 is an apocalyptic number.

72377983 is a deficient number, since it is larger than the sum of its proper divisors (916257).

72377983 is an equidigital number, since it uses as much as digits as its factorization.

72377983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916256.

The product of its digits is 444528, while the sum is 46.

The square root of 72377983 is about 8507.5250807741. The cubic root of 72377983 is about 416.7434909722.

The spelling of 72377983 in words is "seventy-two million, three hundred seventy-seven thousand, nine hundred eighty-three".