72477373 has 2 divisors, whose sum is σ = 72477374. Its totient is φ = 72477372.

The previous prime is 72477371. The next prime is 72477401. The reversal of 72477373 is 37377427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64931364 + 7546009 = 8058^2 + 2747^2 .

It is a cyclic number.

It is not a de Polignac number, because 72477373 - 2¹ = 72477371 is a prime.

It is a super-2 number, since 2×72477373² = 10505939193962258, which contains 22 as substring.

Together with 72477371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72477371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36238686 + 36238687.

It is an arithmetic number, because the mean of its divisors is an integer number (36238687).

Almost surely, 2^72477373 is an apocalyptic number.

It is an amenable number.

72477373 is a deficient number, since it is larger than the sum of its proper divisors (1).

72477373 is an equidigital number, since it uses as much as digits as its factorization.

72477373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172872, while the sum is 40.

The square root of 72477373 is about 8513.3643760854. The cubic root of 72477373 is about 416.9341621718.

The spelling of 72477373 in words is "seventy-two million, four hundred seventy-seven thousand, three hundred seventy-three".