61697379 has 8 divisors (see below), whose sum is σ = 83018320. Its totient is φ = 40754016.

The previous prime is 61697371. The next prime is 61697387. The reversal of 61697379 is 97379616.

It is an interprime number because it is at equal distance from previous prime (61697371) and next prime (61697387).

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

It is not a de Polignac number, because 61697379 - 2³ = 61697371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61697371) 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, 94012 + ... + 94665.

It is an arithmetic number, because the mean of its divisors is an integer number (10377290).

Almost surely, 2^61697379 is an apocalyptic number.

61697379 is a deficient number, since it is larger than the sum of its proper divisors (21320941).

61697379 is a wasteful number, since it uses less digits than its factorization.

61697379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188789.

The product of its digits is 428652, while the sum is 48.

The square root of 61697379 is about 7854.7679150946. The cubic root of 61697379 is about 395.1441635827.

The spelling of 61697379 in words is "sixty-one million, six hundred ninety-seven thousand, three hundred seventy-nine".