61472687 has 4 divisors (see below), whose sum is σ = 61701480. Its totient is φ = 61243896.

The previous prime is 61472681. The next prime is 61472693. The reversal of 61472687 is 78627416.

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

It is an interprime number because it is at equal distance from previous prime (61472681) and next prime (61472693).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61472687 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 (61472681) 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, 113993 + ... + 114530.

It is an arithmetic number, because the mean of its divisors is an integer number (15425370).

Almost surely, 2^61472687 is an apocalyptic number.

61472687 is a deficient number, since it is larger than the sum of its proper divisors (228793).

61472687 is a wasteful number, since it uses less digits than its factorization.

61472687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228792.

The product of its digits is 112896, while the sum is 41.

The square root of 61472687 is about 7840.4519640133. The cubic root of 61472687 is about 394.6638961138.

The spelling of 61472687 in words is "sixty-one million, four hundred seventy-two thousand, six hundred eighty-seven".