72070477 has 16 divisors (see below), whose sum is σ = 80156160. Its totient is φ = 64489392.

The previous prime is 72070459. The next prime is 72070499. The reversal of 72070477 is 77407027.

It is a cyclic number.

It is not a de Polignac number, because 72070477 - 2¹⁵ = 72037709 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 (72070417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35278 + ... + 37264.

It is an arithmetic number, because the mean of its divisors is an integer number (5009760).

Almost surely, 2^72070477 is an apocalyptic number.

It is an amenable number.

72070477 is a deficient number, since it is larger than the sum of its proper divisors (8085683).

72070477 is a wasteful number, since it uses less digits than its factorization.

72070477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 19208, while the sum is 34.

The square root of 72070477 is about 8489.4332555242. The cubic root of 72070477 is about 416.1524592967.

The spelling of 72070477 in words is "seventy-two million, seventy thousand, four hundred seventy-seven".