61970811 has 8 divisors (see below), whose sum is σ = 94431744. Its totient is φ = 35411880.

The previous prime is 61970801. The next prime is 61970851. The reversal of 61970811 is 11807916.

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

It is not a de Polignac number, because 61970811 - 2⁷ = 61970683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61970801) 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, 1475475 + ... + 1475516.

It is an arithmetic number, because the mean of its divisors is an integer number (11803968).

Almost surely, 2^61970811 is an apocalyptic number.

61970811 is a deficient number, since it is larger than the sum of its proper divisors (32460933).

61970811 is a wasteful number, since it uses less digits than its factorization.

61970811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951001.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 61970811 is about 7872.1541524541. The cubic root of 61970811 is about 395.7270399828.

The spelling of 61970811 in words is "sixty-one million, nine hundred seventy thousand, eight hundred eleven".