72477605 has 4 divisors (see below), whose sum is σ = 86973132. Its totient is φ = 57982080.

The previous prime is 72477599. The next prime is 72477611. The reversal of 72477605 is 50677427.

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

It is an interprime number because it is at equal distance from previous prime (72477599) and next prime (72477611).

It can be written as a sum of positive squares in 2 ways, for example, as 37039396 + 35438209 = 6086^2 + 5953^2 .

It is not a de Polignac number, because 72477605 - 2⁶ = 72477541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7247756 + ... + 7247765.

It is an arithmetic number, because the mean of its divisors is an integer number (21743283).

Almost surely, 2^72477605 is an apocalyptic number.

It is an amenable number.

72477605 is a deficient number, since it is larger than the sum of its proper divisors (14495527).

72477605 is a wasteful number, since it uses less digits than its factorization.

72477605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14495526.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 72477605 is about 8513.3780017100. The cubic root of 72477605 is about 416.9346070399.

The spelling of 72477605 in words is "seventy-two million, four hundred seventy-seven thousand, six hundred five".