72632761 has 4 divisors (see below), whose sum is σ = 73823524. Its totient is φ = 71442000.

The previous prime is 72632759. The next prime is 72632797. The reversal of 72632761 is 16723627.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39501225 + 33131536 = 6285^2 + 5756^2 .

It is a cyclic number.

It is not a de Polignac number, because 72632761 - 2¹ = 72632759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72632701) 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, 595290 + ... + 595411.

It is an arithmetic number, because the mean of its divisors is an integer number (18455881).

Almost surely, 2^72632761 is an apocalyptic number.

It is an amenable number.

72632761 is a deficient number, since it is larger than the sum of its proper divisors (1190763).

72632761 is a wasteful number, since it uses less digits than its factorization.

72632761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190762.

The product of its digits is 21168, while the sum is 34.

The square root of 72632761 is about 8522.4856116042. The cubic root of 72632761 is about 417.2319117462.

The spelling of 72632761 in words is "seventy-two million, six hundred thirty-two thousand, seven hundred sixty-one".