61487707 has 4 divisors (see below), whose sum is σ = 62031960. Its totient is φ = 60943456.

The previous prime is 61487687. The next prime is 61487729. The reversal of 61487707 is 70778416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61487707 - 2¹¹ = 61485659 is a prime.

It is a super-2 number, since 2×61487707² = 7561476224235698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61487707.

It is not an unprimeable number, because it can be changed into a prime (61407707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271957 + ... + 272182.

It is an arithmetic number, because the mean of its divisors is an integer number (15507990).

Almost surely, 2^61487707 is an apocalyptic number.

61487707 is a deficient number, since it is larger than the sum of its proper divisors (544253).

61487707 is a wasteful number, since it uses less digits than its factorization.

61487707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544252.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 61487707 is about 7841.4097584554. The cubic root of 61487707 is about 394.6960370492.

The spelling of 61487707 in words is "sixty-one million, four hundred eighty-seven thousand, seven hundred seven".