61077913 has 8 divisors (see below), whose sum is σ = 69238400. Its totient is φ = 53412048.

The previous prime is 61077911. The next prime is 61077917. The reversal of 61077913 is 31977016.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61077913 - 2¹ = 61077911 is a prime.

It is a super-2 number, since 2×61077913² = 7461022912871138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61077911) 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, 123393 + ... + 123886.

It is an arithmetic number, because the mean of its divisors is an integer number (8654800).

Almost surely, 2^61077913 is an apocalyptic number.

It is an amenable number.

61077913 is a deficient number, since it is larger than the sum of its proper divisors (8160487).

61077913 is a wasteful number, since it uses less digits than its factorization.

61077913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247311.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 61077913 is about 7815.2359529319. The cubic root of 61077913 is about 393.8172449862.

The spelling of 61077913 in words is "sixty-one million, seventy-seven thousand, nine hundred thirteen".