61977395 has 8 divisors (see below), whose sum is σ = 74501856. Its totient is φ = 49495936.

The previous prime is 61977361. The next prime is 61977407. The reversal of 61977395 is 59377916.

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 61977395 - 2¹⁰ = 61976371 is a prime.

It is a super-4 number, since 4×61977395⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7487 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (9312732).

Almost surely, 2^61977395 is an apocalyptic number.

61977395 is a deficient number, since it is larger than the sum of its proper divisors (12524461).

61977395 is a wasteful number, since it uses less digits than its factorization.

61977395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21501.

The product of its digits is 357210, while the sum is 47.

The square root of 61977395 is about 7872.5723242153. The cubic root of 61977395 is about 395.7410539706.

The spelling of 61977395 in words is "sixty-one million, nine hundred seventy-seven thousand, three hundred ninety-five".