72761011 has 4 divisors (see below), whose sum is σ = 73243024. Its totient is φ = 72279000.

The previous prime is 72760993. The next prime is 72761023. The reversal of 72761011 is 11016727.

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

It is a cyclic number.

It is not a de Polignac number, because 72761011 - 2¹⁷ = 72629939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72561011) 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, 240780 + ... + 241081.

It is an arithmetic number, because the mean of its divisors is an integer number (18310756).

Almost surely, 2^72761011 is an apocalyptic number.

72761011 is a deficient number, since it is larger than the sum of its proper divisors (482013).

72761011 is a wasteful number, since it uses less digits than its factorization.

72761011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482012.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 72761011 is about 8530.0065064453. The cubic root of 72761011 is about 417.4773406135.

Adding to 72761011 its reverse (11016727), we get a palindrome (83777738).

The spelling of 72761011 in words is "seventy-two million, seven hundred sixty-one thousand, eleven".