39770661 has 16 divisors (see below), whose sum is σ = 61632000. Its totient is φ = 22340208.

The previous prime is 39770641. The next prime is 39770677. The reversal of 39770661 is 16607793.

It is not a de Polignac number, because 39770661 - 2¹⁰ = 39769637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39770641) 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, 14811 + ... + 17288.

It is an arithmetic number, because the mean of its divisors is an integer number (3852000).

Almost surely, 2^39770661 is an apocalyptic number.

It is an amenable number.

39770661 is a deficient number, since it is larger than the sum of its proper divisors (21861339).

39770661 is a wasteful number, since it uses less digits than its factorization.

39770661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32168.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 39770661 is about 6306.3984174805. The cubic root of 39770661 is about 341.3403292388.

The spelling of 39770661 in words is "thirty-nine million, seven hundred seventy thousand, six hundred sixty-one".