61671087 has 12 divisors (see below), whose sum is σ = 94320720. Its totient is φ = 38695488.

The previous prime is 61671083. The next prime is 61671091. The reversal of 61671087 is 78017616.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61671083) and next prime (61671091).

It is not a de Polignac number, because 61671087 - 2² = 61671083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61671083) 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, 201387 + ... + 201692.

It is an arithmetic number, because the mean of its divisors is an integer number (7860060).

Almost surely, 2^61671087 is an apocalyptic number.

61671087 is a deficient number, since it is larger than the sum of its proper divisors (32649633).

61671087 is a wasteful number, since it uses less digits than its factorization.

61671087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403102 (or 403099 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 61671087 is about 7853.0941036002. The cubic root of 61671087 is about 395.0880261010.

The spelling of 61671087 in words is "sixty-one million, six hundred seventy-one thousand, eighty-seven".