61612797 has 4 divisors (see below), whose sum is σ = 82150400. Its totient is φ = 41075196.

The previous prime is 61612787. The next prime is 61612823. The reversal of 61612797 is 79721616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61612797 - 2¹⁰ = 61611773 is a prime.

It is a super-2 number, since 2×61612797² = 7592273508326418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61612787) 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, 10268797 + ... + 10268802.

It is an arithmetic number, because the mean of its divisors is an integer number (20537600).

Almost surely, 2^61612797 is an apocalyptic number.

It is an amenable number.

61612797 is a deficient number, since it is larger than the sum of its proper divisors (20537603).

61612797 is a wasteful number, since it uses less digits than its factorization.

61612797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20537602.

The product of its digits is 31752, while the sum is 39.

The square root of 61612797 is about 7849.3819501920. The cubic root of 61612797 is about 394.9635110234.

The spelling of 61612797 in words is "sixty-one million, six hundred twelve thousand, seven hundred ninety-seven".