40670537 has 2 divisors, whose sum is σ = 40670538. Its totient is φ = 40670536.

The previous prime is 40670533. The next prime is 40670549. The reversal of 40670537 is 73507604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40653376 + 17161 = 6376^2 + 131^2 .

It is a cyclic number.

It is not a de Polignac number, because 40670537 - 2² = 40670533 is a prime.

It is not a weakly prime, because it can be changed into another prime (40670533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20335268 + 20335269.

It is an arithmetic number, because the mean of its divisors is an integer number (20335269).

Almost surely, 2^40670537 is an apocalyptic number.

It is an amenable number.

40670537 is a deficient number, since it is larger than the sum of its proper divisors (1).

40670537 is an equidigital number, since it uses as much as digits as its factorization.

40670537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 40670537 is about 6377.3456076960. The cubic root of 40670537 is about 343.8956129321.

The spelling of 40670537 in words is "forty million, six hundred seventy thousand, five hundred thirty-seven".