61874665 has 8 divisors (see below), whose sum is σ = 74344968. Its totient is φ = 49436160.

The previous prime is 61874663. The next prime is 61874671. The reversal of 61874665 is 56647816.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2322576 + 59552089 = 1524^2 + 7717^2 .

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

It is not a de Polignac number, because 61874665 - 2¹ = 61874663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61874663) 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, 3432 + ... + 11641.

It is an arithmetic number, because the mean of its divisors is an integer number (9293121).

Almost surely, 2^61874665 is an apocalyptic number.

It is an amenable number.

61874665 is a deficient number, since it is larger than the sum of its proper divisors (12470303).

61874665 is a wasteful number, since it uses less digits than its factorization.

61874665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15899.

The product of its digits is 241920, while the sum is 43.

The square root of 61874665 is about 7866.0450672495. The cubic root of 61874665 is about 395.5222808662.

The spelling of 61874665 in words is "sixty-one million, eight hundred seventy-four thousand, six hundred sixty-five".