61387207 has 8 divisors (see below), whose sum is σ = 73207296. Its totient is φ = 50329752.

The previous prime is 61387201. The next prime is 61387211. The reversal of 61387207 is 70278316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61387207 - 2²³ = 52998599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61387201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190483 + ... + 190804.

It is an arithmetic number, because the mean of its divisors is an integer number (9150912).

Almost surely, 2^61387207 is an apocalyptic number.

61387207 is a deficient number, since it is larger than the sum of its proper divisors (11820089).

61387207 is a wasteful number, since it uses less digits than its factorization.

61387207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381317.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 61387207 is about 7834.9988513081. The cubic root of 61387207 is about 394.4808797719.

The spelling of 61387207 in words is "sixty-one million, three hundred eighty-seven thousand, two hundred seven".