70577977 has 4 divisors (see below), whose sum is σ = 70943860. Its totient is φ = 70212096.

The previous prime is 70577963. The next prime is 70577987. The reversal of 70577977 is 77977507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77977507 = 6883 ⋅11329.

It can be written as a sum of positive squares in 2 ways, for example, as 40755456 + 29822521 = 6384^2 + 5461^2 .

It is a cyclic number.

It is not a de Polignac number, because 70577977 - 2⁷ = 70577849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70577977.

It is not an unprimeable number, because it can be changed into a prime (70577987) 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, 182652 + ... + 183037.

It is an arithmetic number, because the mean of its divisors is an integer number (17735965).

Almost surely, 2^70577977 is an apocalyptic number.

It is an amenable number.

70577977 is a deficient number, since it is larger than the sum of its proper divisors (365883).

70577977 is a wasteful number, since it uses less digits than its factorization.

70577977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365882.

The product of its (nonzero) digits is 756315, while the sum is 49.

The square root of 70577977 is about 8401.0699913761. The cubic root of 70577977 is about 413.2597119281.

The spelling of 70577977 in words is "seventy million, five hundred seventy-seven thousand, nine hundred seventy-seven".