61279061 has 4 divisors (see below), whose sum is σ = 63943392. Its totient is φ = 58614732.

The previous prime is 61279021. The next prime is 61279063. The reversal of 61279061 is 16097216.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 61279061 - 2¹⁰ = 61278037 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 (61279063) 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, 1332131 + ... + 1332176.

It is an arithmetic number, because the mean of its divisors is an integer number (15985848).

Almost surely, 2^61279061 is an apocalyptic number.

It is an amenable number.

61279061 is a deficient number, since it is larger than the sum of its proper divisors (2664331).

61279061 is a wasteful number, since it uses less digits than its factorization.

61279061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664330.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 61279061 is about 7828.0943402593. The cubic root of 61279061 is about 394.2490909450.

The spelling of 61279061 in words is "sixty-one million, two hundred seventy-nine thousand, sixty-one".