61786797 has 8 divisors (see below), whose sum is σ = 83612256. Its totient is φ = 40576272.

The previous prime is 61786771. The next prime is 61786819. The reversal of 61786797 is 79768716.

It is a happy number.

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

It is not a de Polignac number, because 61786797 - 2¹⁵ = 61754029 is a prime.

It is a super-3 number, since 3×61786797³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61786757) 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, 153498 + ... + 153899.

It is an arithmetic number, because the mean of its divisors is an integer number (10451532).

Almost surely, 2^61786797 is an apocalyptic number.

61786797 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

61786797 is a deficient number, since it is larger than the sum of its proper divisors (21825459).

61786797 is a wasteful number, since it uses less digits than its factorization.

61786797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307467.

The product of its digits is 889056, while the sum is 51.

The square root of 61786797 is about 7860.4578110947. The cubic root of 61786797 is about 395.3349655571.

The spelling of 61786797 in words is "sixty-one million, seven hundred eighty-six thousand, seven hundred ninety-seven".