61928685 has 96 divisors (see below), whose sum is σ = 137437440. Its totient is φ = 25764480.

The previous prime is 61928683. The next prime is 61928687. The reversal of 61928685 is 58682916.

61928685 is a `hidden beast` number, since 619 + 28 + 6 + 8 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (61928683) and next prime (61928687).

It is not a de Polignac number, because 61928685 - 2¹ = 61928683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61928685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61928683) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 872200 + ... + 872270.

It is an arithmetic number, because the mean of its divisors is an integer number (1431640).

Almost surely, 2^61928685 is an apocalyptic number.

61928685 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61928685 is an abundant number, since it is smaller than the sum of its proper divisors (75508755).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61928685 is a wasteful number, since it uses less digits than its factorization.

61928685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 99 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 61928685 is about 7869.4780640142. The cubic root of 61928685 is about 395.6373516505.

The spelling of 61928685 in words is "sixty-one million, nine hundred twenty-eight thousand, six hundred eighty-five".