61487001 has 6 divisors (see below), whose sum is σ = 88814570. Its totient is φ = 40991328.

The previous prime is 61486991. The next prime is 61487057. The reversal of 61487001 is 10078416.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 1440000 = 7749^2 + 1200^2 .

It is not a de Polignac number, because 61487001 - 2⁵ = 61486969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61487501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3415936 + ... + 3415953.

Almost surely, 2^61487001 is an apocalyptic number.

It is an amenable number.

61487001 is a deficient number, since it is larger than the sum of its proper divisors (27327569).

61487001 is a wasteful number, since it uses less digits than its factorization.

61487001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6831895 (or 6831892 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 61487001 is about 7841.3647409109. The cubic root of 61487001 is about 394.6945264141.

The spelling of 61487001 in words is "sixty-one million, four hundred eighty-seven thousand, one".