40670761 has 2 divisors, whose sum is σ = 40670762. Its totient is φ = 40670760.

The previous prime is 40670759. The next prime is 40670767. The reversal of 40670761 is 16707604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35581225 + 5089536 = 5965^2 + 2256^2 .

It is a cyclic number.

It is not a de Polignac number, because 40670761 - 2¹ = 40670759 is a prime.

It is a super-2 number, since 2×40670761² = 3308221600638242, which contains 22 as substring.

Together with 40670759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40670767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20335380 + 20335381.

It is an arithmetic number, because the mean of its divisors is an integer number (20335381).

Almost surely, 2^40670761 is an apocalyptic number.

It is an amenable number.

40670761 is a deficient number, since it is larger than the sum of its proper divisors (1).

40670761 is an equidigital number, since it uses as much as digits as its factorization.

40670761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 40670761 is about 6377.3631698375. The cubic root of 40670761 is about 343.8962442857.

The spelling of 40670761 in words is "forty million, six hundred seventy thousand, seven hundred sixty-one".