40720671 has 8 divisors (see below), whose sum is σ = 60326960. Its totient is φ = 27147096.

The previous prime is 40720663. The next prime is 40720681. The reversal of 40720671 is 17602704.

It is not a de Polignac number, because 40720671 - 2³ = 40720663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1508173 = 40720671 / (4 + 0 + 7 + 2 + 0 + 6 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40720601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754060 + ... + 754113.

It is an arithmetic number, because the mean of its divisors is an integer number (7540870).

Almost surely, 2^40720671 is an apocalyptic number.

40720671 is a deficient number, since it is larger than the sum of its proper divisors (19606289).

40720671 is a wasteful number, since it uses less digits than its factorization.

40720671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508182 (or 1508176 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 40720671 is about 6381.2750293339. The cubic root of 40720671 is about 344.0368600083.

The spelling of 40720671 in words is "forty million, seven hundred twenty thousand, six hundred seventy-one".