40770657 has 12 divisors (see below), whose sum is σ = 59095764. Its totient is φ = 27085920.

The previous prime is 40770647. The next prime is 40770659. The reversal of 40770657 is 75607704.

It can be written as a sum of positive squares in 2 ways, for example, as 25160256 + 15610401 = 5016^2 + 3951^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40770657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40770659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5094 + ... + 10367.

It is an arithmetic number, because the mean of its divisors is an integer number (4924647).

Almost surely, 2^40770657 is an apocalyptic number.

It is an amenable number.

40770657 is a deficient number, since it is larger than the sum of its proper divisors (18325107).

40770657 is a wasteful number, since it uses less digits than its factorization.

40770657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15760 (or 15757 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 40770657 is about 6385.1904435185. The cubic root of 40770657 is about 344.1775747379.

The spelling of 40770657 in words is "forty million, seven hundred seventy thousand, six hundred fifty-seven".