72078463 has 4 divisors (see below), whose sum is σ = 73438488. Its totient is φ = 70718440.

The previous prime is 72078443. The next prime is 72078511. The reversal of 72078463 is 36487027.

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 72078463 - 2⁵ = 72078431 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 (72078443) 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, 679933 + ... + 680038.

It is an arithmetic number, because the mean of its divisors is an integer number (18359622).

Almost surely, 2^72078463 is an apocalyptic number.

72078463 is a deficient number, since it is larger than the sum of its proper divisors (1360025).

72078463 is a wasteful number, since it uses less digits than its factorization.

72078463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360024.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 72078463 is about 8489.9035919143. The cubic root of 72078463 is about 416.1678297643.

The spelling of 72078463 in words is "seventy-two million, seventy-eight thousand, four hundred sixty-three".